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    "textoCompleto" => "<span class="elsevierStyleSections"><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0065">Introduction</span><p id="par0005" class="elsevierStylePara elsevierViewall">Aortic stenosis &#40;AS&#41; is the most prevalent valvular disease in the Western world&#44; and surgical valve replacement remains the standard treatment&#46; However&#44; approximately one third of patients are not referred or are rejected for surgical treatment due to high risk&#46; In recent years&#44; transcatheter aortic valve implantation &#40;TAVI&#41; has emerged as an alternative treatment for these patients&#46;<a class="elsevierStyleCrossRefs" href="#bib0125"><span class="elsevierStyleSup">1&#8211;3</span></a></p><p id="par0010" class="elsevierStylePara elsevierViewall">Different cardiac imaging techniques are essential in the proper selection of patients for TAVI&#44; in intraprocedural monitoring and in subsequent follow-up&#46; Of these techniques&#44; transesophageal echocardiography &#40;TEE&#41; is very helpful for selecting prosthesis size&#44; guiding valve positioning and release&#44; checking the final result and detecting complications&#46;<a class="elsevierStyleCrossRefs" href="#bib0140"><span class="elsevierStyleSup">4&#8211;6</span></a> Moreover&#44; three-dimensional &#40;3D&#41; TEE&#44; due to its ability to characterize soft structures&#44; has a growing role during percutaneous interventions of structural heart disease&#46;</p><p id="par0015" class="elsevierStylePara elsevierViewall">During all the steps of TAVI&#44; mobile echogenic images &#40;MEI&#41; can be observed in some patients&#46; These are defined as small mobile masses&#44; mainly attached to catheters&#44; after valvuloplasty or prosthetic vale implantation&#44; or as remains of the former valve structure&#46;</p><p id="par0020" class="elsevierStylePara elsevierViewall">The aim of our study was to clarify the incidence and clinical significance of MEI detected by 3D TEE&#44; as there are no specifically designed studies for this purpose&#46;</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0070">Methods</span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0075">Study population and procedure</span><p id="par0025" class="elsevierStylePara elsevierViewall">One hundred and four consecutive patients referred to our center for TAVI were included&#46; The device used in all cases was the Edwards SAPIEN prosthesis&#44; and all procedures were performed under general anesthesia&#46; A transfemoral approach was the first choice&#44; although in cases with minimum peripheral vascular diameter &#60;6 mm or excessive tortuosity implantation was performed by a transapical route&#46;</p><p id="par0030" class="elsevierStylePara elsevierViewall">In transfemoral procedures&#44; surgical exposure of the femoral artery was performed in all except six cases and 100 IU&#47;kg intravenous heparin was administered&#46; Prior to valve implantation&#44; balloon valvuloplasty was performed under rapid ventricular pacing using a temporary pacemaker inserted in the right ventricle&#46;</p></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0080">Echocardiographic monitoring</span><p id="par0035" class="elsevierStylePara elsevierViewall">3D TEE monitoring was performed in all cases&#44; using an iE 33 ultrasound system &#40;Philips&#41;&#46;</p><p id="par0040" class="elsevierStylePara elsevierViewall">The presence of MEI during the procedure was assessed&#44; as well as their main echocardiographic characteristics and time of occurrence&#46;</p><p id="par0045" class="elsevierStylePara elsevierViewall">MEI were defined as small mobile masses&#44; mainly attached to catheters&#44; after valvuloplasty or prosthetic valve implantation&#44; or as remains of the former valve structure&#46;</p><p id="par0050" class="elsevierStylePara elsevierViewall">The echocardiographic images were assessed independently by two experts in imaging and monitoring of structural interventional procedures&#46;</p></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0085">Statistical analysis</span><p id="par0055" class="elsevierStylePara elsevierViewall">The data collected were analyzed using SPSS version 20&#46;0 for Mac &#40;SPSS Inc&#46;&#44; Chicago&#44; IL&#44; USA&#41;&#46; Qualitative variables were expressed as percentages&#44; and quantitative variables as mean &#177; standard deviation&#46; The chi-square test with Fisher&#39;s correction was used for comparison between qualitative variables&#46; A multivariate analysis was performed using logistic regression&#46; Comparison between quantitative variables was performed using the Student&#39;s t test&#46; A value of p&#60;0&#46;05 was considered statistically significant&#46;</p></span></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0090">Results</span><p id="par0060" class="elsevierStylePara elsevierViewall">Out of the 104 patients&#44; 81 &#40;78&#37;&#41; underwent TAVI by a transfemoral approach&#46; The clinical characteristics of the study population are summarized in <a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>&#46;</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><span id="sec0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0095">Timing and location of mobile echogenic masses</span><p id="par0065" class="elsevierStylePara elsevierViewall">MEI were visualized during the procedure in 11 patients &#40;11&#37;&#41;&#46; Echocardiographic characteristics&#44; including dimensions&#44; time of appearance and disappearance and operator&#39;s interpretation&#44; are summarized in <a class="elsevierStyleCrossRef" href="#tbl0010">Table 2</a>&#46;</p><elsevierMultimedia ident="tbl0010"></elsevierMultimedia><p id="par0070" class="elsevierStylePara elsevierViewall">In four cases&#44; MEI were observed before valve implantation &#40;one before and three after valvuloplasty&#41;&#44; whereas in while cases &#40;64&#37;&#41; they appeared during valve implantation&#46;</p><p id="par0075" class="elsevierStylePara elsevierViewall">Of note&#44; 45&#37; of MEI &#40;n&#61;5&#41; disappeared at the end of the procedure&#46;</p><p id="par0080" class="elsevierStylePara elsevierViewall">MEI were located at the aortic root in four cases &#40;36&#37;&#41;&#44; in the left ventricular cavity in two &#40;18&#37;&#41;&#44; attached to the catheter in three &#40;27&#37;&#41;&#44; and in other locations &#40;the prosthetic valve and the aortic arch&#41; in two patients &#40;18&#37;&#41;&#46;</p></span><span id="sec0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0100">Echocardiographic features of mobile echogenic masses</span><p id="par0085" class="elsevierStylePara elsevierViewall">There was consensus in the identification of MEIs between the two observers in 100&#37; of cases&#44; including their description and main echocardiographic characteristics&#46; They were interpreted as thrombus in 55&#37; of cases&#44; and as remains of native valve structures in 45&#37;&#46;</p><p id="par0090" class="elsevierStylePara elsevierViewall">The size of MEI ranged from 3 mm to 30 mm&#44; and 45&#37; of them had the echocardiographic density of calcium&#46;</p></span><span id="sec0045" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0105">Clinical implications of mobile echogenic masses</span><p id="par0095" class="elsevierStylePara elsevierViewall">No statistically significant differences were identified between patients with and without MEI regarding baseline characteristics&#44; type of access&#44; incidence of in-hospital stroke&#44; or in-hospital mortality &#40;<a class="elsevierStyleCrossRef" href="#tbl0015">Table 3</a>&#41;&#46; Three out of the 104 patients had an in-hospital stroke&#44; but in only one of these cases were MEI observed during valve implantation &#40;<a class="elsevierStyleCrossRef" href="#tbl0020">Table 4</a>&#41;&#46; Previous myocardial infarction was the only predictor significantly associated with the occurrence of stroke during hospitalization&#46;</p><elsevierMultimedia ident="tbl0015"></elsevierMultimedia><elsevierMultimedia ident="tbl0020"></elsevierMultimedia></span></span><span id="sec0050" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0110">Discussion</span><p id="par0100" class="elsevierStylePara elsevierViewall">This is the first study specifically focused on MEI during TAVI with TEE monitoring&#46; Our findings show that in up to 11&#37; of cases MEI can be observed during 3D TEE monitoring of TAVI procedures&#46; These images are in most cases a thrombus attached to catheters or remains of former valve structures&#44; which represent a potential source of emboli&#46;<a class="elsevierStyleCrossRef" href="#bib0155"><span class="elsevierStyleSup">7</span></a> However&#44; we did not observe an increase in the incidence of periprocedural stroke in patients with MEI &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Figure 1</a>&#41;&#46;</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><p id="par0105" class="elsevierStylePara elsevierViewall">TEE monitoring of non-coronary interventional procedures is an essential safety tool and is considered one of the great challenges of cardiac imaging&#46; Traditional fluoroscopy provides an inaccurate display of soft cardiac structures and is dependent on high doses of iodinated contrast and long exposure to ionizing radiation&#46; Sector scanning and safety of the procedure are better with TEE than with intracardiac echocardiography&#46; In our series&#44; the presence of MEI was highly reproducible by experienced TEE operators&#44; and there was a 100&#37; correlation between two qualified physicians&#46;<a class="elsevierStyleCrossRef" href="#bib0160"><span class="elsevierStyleSup">8</span></a> In our experience&#44; 3D TEE is particularly useful for characterization&#44; since real-time imaging provides information about location of MEI&#44; time of onset and relation to cardiac structures&#44; and devices used during the procedure&#46; The characterization of MEI can in some cases help to correct their precipitating factors and thereby minimize the risk of embolism&#46; With the use of 3D TEE&#44; up to 55&#37; of MEI in our series were identified as thrombus attached to the catheters&#44; and probably allowed the operator to modify the precipitating factors and increase the dose of heparin used&#44; thus preventing clinical consequences &#40;stroke or systemic embolism&#41;&#46;<a class="elsevierStyleCrossRefs" href="#bib0165"><span class="elsevierStyleSup">9&#44;10</span></a></p><p id="par0110" class="elsevierStylePara elsevierViewall">Although TAVI is considered an effective and safe therapeutic option for patients with aortic stenosis and high surgical risk&#44; 30-day mortality of patients undergoing this procedure is still around 8&#37;&#8211;10&#37;&#46;<a class="elsevierStyleCrossRef" href="#bib0130"><span class="elsevierStyleSup">2</span></a> This mortality is largely associated with the main complications inherent to the procedure&#58; vascular complications&#44; device embolization and stroke&#46;<a class="elsevierStyleCrossRef" href="#bib0175"><span class="elsevierStyleSup">11</span></a> The prognosis of patients with periprocedural stroke after TAVI is poor and remains one of the limitations of the technique&#46; Previous studies estimated 30-day mortality in these patients at 42&#46;3&#37;&#44; compared with patients without stroke of around 5&#46;1&#37;&#46;<a class="elsevierStyleCrossRefs" href="#bib0180"><span class="elsevierStyleSup">12&#8211;14</span></a></p><p id="par0115" class="elsevierStylePara elsevierViewall">The PARTNER B study showed a higher incidence of stroke at 30 days in patients undergoing TAVI compared with those randomized to medical therapy &#40;5&#46;0&#37; vs&#46; 1&#46;1&#37;&#44; p&#61;0&#46;06&#41;&#46;<a class="elsevierStyleCrossRef" href="#bib0135"><span class="elsevierStyleSup">3</span></a> The main contributing factors are post-valvuloplasty valve remains&#44; formation of thrombus attached to catheters&#44; erosion of aortic plaques or even thrombosis of the implanted valve&#46; Other factors&#44; such as the presence of spontaneous echo contrast in the left atrium or supraventricular arrhythmias such as atrial fibrillation or flutter&#44; are common and may increase the risk of embolism&#46;<a class="elsevierStyleCrossRefs" href="#bib0195"><span class="elsevierStyleSup">15&#8211;17</span></a> These phenomena were not observed in the PARTNER A study&#44; in which patients undergoing TAVI and surgical aortic valve replacement showed no significant differences in periprocedural stroke rates &#40;3&#46;8&#37; vs&#46; 2&#46;1&#37;&#44; p&#61;0&#46;20&#41;&#46;<a class="elsevierStyleCrossRef" href="#bib0130"><span class="elsevierStyleSup">2</span></a></p><p id="par0120" class="elsevierStylePara elsevierViewall">In our study&#44; we observed MEI mainly during valve implantation&#46; The Edwards SAPIEN device used in all patients is designed similarly to a stent&#44; being mounted on a balloon&#44; which is inflated to high pressure once it is positioned at the level of the annular plane&#46; Analogously to the compression involved in coronary balloon angioplasty&#44; valve implantation excludes the calcified aortic leaflets&#44; which are compressed between the ring and the valve&#46; Total or partial disintegration of the leaflets&#44; aggravated in most cases by high calcification&#44; makes them into pedunculated mobile structures&#44; with embolic potential&#46;<a class="elsevierStyleCrossRefs" href="#bib0210"><span class="elsevierStyleSup">18&#44;19</span></a></p><p id="par0125" class="elsevierStylePara elsevierViewall">It is noteworthy that in 45&#37; of cases&#44; the MEI disappeared during the procedure and no correlation with a higher incidence of periprocedural stroke was observed&#46; Previous studies have shown high incidences of brain microbleeds associated with TAVI&#44; with a variable incidence that can approach 70&#37;&#46; There is considerable interest in the clinical&#44; cognitive and functional impairment that these injuries may cause and that in most cases remains unnoticed&#46; The role played in this context by MEI visualized during the procedure remains unclear&#46;<a class="elsevierStyleCrossRefs" href="#bib0220"><span class="elsevierStyleSup">20&#8211;24</span></a></p></span><span id="sec0055" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0115">Conclusions</span><p id="par0130" class="elsevierStylePara elsevierViewall">Visualization of MEI during 3D TEE monitoring of TAVI is relatively common &#40;11&#37; of cases in our study&#41;&#46; Echocardiographic characterization identifies them in over 50&#37; of cases as thrombi&#46; The clinical implications of this finding are uncertain&#44; as despite their frequency&#44; there was no increased incidence of clinical stroke in this patient population&#46; 3D TEE is a useful tool for diagnosis and can alert the operator to their presence&#46;</p></span><span id="sec0060" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0120">Ethical disclosures</span><span id="sec0065" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0125">Protection of human and animal subjects</span><p id="par0135" class="elsevierStylePara elsevierViewall">The authors declare that no experiments were performed on humans or animals for this study&#46;</p></span><span id="sec0070" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0130">Confidentiality of data</span><p id="par0140" class="elsevierStylePara elsevierViewall">The authors declare that they have followed the protocols of their work center on the publication of patient data&#46;</p></span><span id="sec0075" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0135">Right to privacy and informed consent</span><p id="par0145" class="elsevierStylePara elsevierViewall">The authors declare that no patient data appear in this article&#46;</p></span></span><span id="sec0080" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0140">Conflicts of interest</span><p id="par0150" class="elsevierStylePara elsevierViewall">The authors have no conflicts of interest to declare&#46;</p></span></span>"
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              "titulo" => "Timing and location of mobile echogenic masses"
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            0 => "Transcatheter aortic valve implantation"
            1 => "Three-dimensional"
            2 => "Aortic stenosis"
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            0 => "Implanta&#231;&#227;o valvular a&#243;rtica percut&#226;nea"
            1 => "3 D"
            2 => "Estenose a&#243;rtica"
            3 => "V&#225;lvula transa&#243;rtica"
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    "resumen" => array:2 [
      "en" => array:3 [
        "titulo" => "Abstract"
        "resumen" => "<span id="abst0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Introduction and Objectives</span><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">To investigate the incidence and clinical relevance of the presence of mobile echogenic images &#40;MEI&#41; during transesophageal echocardiography &#40;TEE&#41; for monitoring of transcatheter aortic valve implantation &#40;TAVI&#41;&#46;</p></span> <span id="abst0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0015">Methods</span><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Consecutive patients referred to our center for transfemoral or transapical TAVI were included&#46; The procedure was monitored by three-dimensional &#40;3D&#41; TEE and images were analyzed by two independent experts&#46; In-hospital follow-up was carried out and correlated with imaging findings&#46;</p></span> <span id="abst0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0020">Results</span><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">A total of 104 patients were included&#46; MEI were visualized in 11 patients during the procedure &#40;11&#37;&#41; and in over 50&#37; of cases were identified as thrombi&#44; however no differences in periprocedural stroke were found in follow-up&#46;</p></span> <span id="abst0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Conclusions</span><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">Visualization of MEI during 3D TEE monitoring of TAVI is relatively common &#40;11&#37;&#41; and in over 50&#37; of cases they are identified as thrombi&#46; The clinical implications of this finding are uncertain&#44; as despite their frequency&#44; the incidence of clinical stroke in this patient population was no higher&#46; 3D TEE is a useful tool for diagnosis of MEI and can alert the operator to their presence&#46;</p></span>"
        "secciones" => array:4 [
          0 => array:2 [
            "identificador" => "abst0005"
            "titulo" => "Introduction and Objectives"
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          1 => array:2 [
            "identificador" => "abst0010"
            "titulo" => "Methods"
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          2 => array:2 [
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            "titulo" => "Results"
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        "resumen" => "<span id="abst0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0035">Introdu&#231;&#227;o e objetivos</span><p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">Investigar a incid&#234;ncia e relev&#226;ncia cl&#237;nica da presen&#231;a de imagens ecog&#233;nicas m&#243;veis &#40;IEM&#41;&#44; atrav&#233;s de ecocardiografia transesof&#225;gica &#40;ETE&#41; durante a implanta&#231;&#227;o valvular a&#243;rtica percut&#226;nea &#40;TAVI&#41;&#46;</p></span> <span id="abst0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0040">M&#233;todos</span><p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">Foram inclu&#237;dos doentes consecutivos referenciados para o nosso centro para realiza&#231;&#227;o de TAVI por via transapical ou transfemoral&#46; Foi realizada a monitoriza&#231;&#227;o da ETE 3 D e as imagens foram analisadas por dois peritos individualmente&#46; O seguimento foi realizado no hospital e foi correlacionado com achados de imagem&#46;</p></span> <span id="abst0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0045">Resultados</span><p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">Foram definitivamente inclu&#237;dos 104 doentes&#46; Durante o procedimento foram visualizadas IEM em 11 pacientes &#40;11&#37;&#41; e&#44;em mais de 50&#37; dos casos&#44; foram identificadas como trombos&#44; n&#227;o tendo&#44; no entanto&#44; sido encontradas diferen&#231;as no seguimento dos doentes&#46;</p></span> <span id="abst0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0050">Conclus&#245;es</span><p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">A visualiza&#231;&#227;o das IEM atrav&#233;s da monitoriza&#231;&#227;o por ETE 3 D durante a TAVI &#233; relativamente comum &#40;11&#37;&#41; e&#44; em mais de 50&#37; dos casos&#44; s&#227;o identificadas como trombos&#46; As implica&#231;&#245;es cl&#237;nicas deste achado s&#227;o incertas&#44; porque apesar da sua frequ&#234;ncia n&#227;o h&#225; maior incid&#234;ncia de acidente vascular cerebral cl&#237;nico nesta popula&#231;&#227;o de doentes&#46; A ETE &#233; uma ferramenta &#250;til para o diagn&#243;stico e pode alertar o operador da sua presen&#231;a&#46;</p></span>"
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          "en" => "<p id="spar0045" class="elsevierStyleSimplePara elsevierViewall">An 85-year-old woman with a history of severe aortic stenosis who was accepted for transfemoral valve replacement&#46; After the valve was crossed with the hydrophilic wire&#44; a mobile echogenic image &#40;MEI&#41; was observed by the TEE operator and identified as thrombus&#46; 2000 U of heparin were administered&#44; but unfortunately the thrombus embolized&#46; Cerebral angiography was then performed and showed occlusion of the right mid cerebral artery&#44; and thrombectomy was successfully performed&#46; The patient was discharged without neurological deficit&#46; &#40;A&#41; Three-dimensional determination of aortic valvular area &#40;0&#46;6 cm<span class="elsevierStyleSup">2</span>&#41;&#59; &#40;B and C&#41; mobile echogenic image observed during the procedure and identified as thrombus&#59; &#40;D&#41; macroscopic image of the thrombus that was extracted from the right mid cerebral artery&#46;</p>"
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        "identificador" => "tbl0005"
        "etiqueta" => "Table 1"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "tabla" => array:2 [
          "leyenda" => "<p id="spar0055" class="elsevierStyleSimplePara elsevierViewall">MEI&#58; mobile echogenic masses&#59; MI&#58; myocardial infarction&#46;</p>"
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><tbody title="tbody"><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Transfemoral approach&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">81 &#40;78&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Transapical approach&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">23 &#40;22&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Hypertension&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">85 &#40;82&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Diabetes&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">42 &#40;41&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Dyslipidemia&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">54 &#40;52&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Previous stroke&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">19 &#40;18&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Coronary disease&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">49 &#40;47&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Previous MI&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">13 &#40;12&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Renal failure&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">25 &#40;24&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Peripheral vascular disease&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">14 &#40;13&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Atrial fibrillation&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">44 &#40;42&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Intracardiac thrombus&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1 &#40;1&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">MEI&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">11 &#40;11&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">In-hospital stroke&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">3 &#40;3&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
              ]
              "imagenFichero" => array:1 [
                0 => "xTab1004251.png"
              ]
            ]
          ]
        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0050" class="elsevierStyleSimplePara elsevierViewall">Baseline characteristics of the study population&#46;</p>"
        ]
      ]
      2 => array:7 [
        "identificador" => "tbl0010"
        "etiqueta" => "Table 2"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "tabla" => array:1 [
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="table-head  " align="" valign="top" scope="col" style="border-bottom: 2px solid black">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Yes&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">No&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="table-entry  " colspan="3" align="left" valign="top"><span class="elsevierStyleItalic">Appearance</span></td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Valvuloplasty&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1 &#40;10&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">10 &#40;90&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Post valvuloplasty&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">3 &#40;27&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">8 &#40;73&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Prosthesis implantation&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">7 &#40;64&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">4 &#40;36&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Disappearance&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">5 &#40;45&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">6 &#40;55&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " colspan="3" align="left" valign="top"><span class="elsevierStyleVsp" style="height:0.5px"></span></td></tr><tr title="table-row"><td class="td" title="table-entry  " colspan="3" align="left" valign="top"><span class="elsevierStyleItalic">Location</span></td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Ventricle&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">2 &#40;18&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">9 &#40;82&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Catheter&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">3 &#40;27&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">8 &#40;73&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Prosthesis&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1 &#40;9&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">10 &#40;90&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Aortic root&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">4 &#40;36&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">7 &#40;64&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Ascending aorta&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1 &#40;9&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">10 &#40;90&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Mobility&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">11 &#40;100&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Calcium&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">5 &#40;45&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">6 &#40;55&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " colspan="3" align="left" valign="top"><span class="elsevierStyleVsp" style="height:0.5px"></span></td></tr><tr title="table-row"><td class="td" title="table-entry  " colspan="3" align="left" valign="top"><span class="elsevierStyleItalic">Morphology</span></td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Valve structures&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">5 &#40;45&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">6 &#40;55&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Thrombus&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">6 &#40;55&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">5 &#40;45&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
              ]
              "imagenFichero" => array:1 [
                0 => "xTab1004252.png"
              ]
            ]
          ]
        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0060" class="elsevierStyleSimplePara elsevierViewall">Characteristics of mobile echogenic masses&#46;</p>"
        ]
      ]
      3 => array:7 [
        "identificador" => "tbl0015"
        "etiqueta" => "Table 3"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "tabla" => array:2 [
          "leyenda" => "<p id="spar0070" class="elsevierStyleSimplePara elsevierViewall">AF&#58; atrial fibrillation&#59; MEI&#58; mobile echogenic masses&#59; MI&#58; myocardial infarction&#46;</p>"
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="table-head  " align="" valign="top" scope="col" style="border-bottom: 2px solid black">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">MEI &#40;n&#61;12&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">No MEI &#40;n&#61;92&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">p&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Transfemoral approach&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">10 &#40;83&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">79 &#40;91&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Transapical approach&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">2 &#40;17&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">21 &#40;23&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Hypertension&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">10 &#40;83&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">75 &#40;81&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Diabetes&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">3 &#40;25&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">39 &#40;42&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;352&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Dyslipidemia&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">6 &#40;50&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">48 &#40;52&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Previous stroke&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">3 &#40;25&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">16 &#40;17&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;456&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Coronary disease&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">6 &#40;50&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">43 &#40;47&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Previous MI&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1 &#40;8&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">12 &#40;13&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Renal failure&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">2 &#40;17&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">23 &#40;25&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;726&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Peripheral vascular disease&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">3 &#40;25&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">11 &#40;12&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;203&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Previous AF&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">5 &#40;42&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">39 &#40;42&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Intracardiac thrombus&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1 &#40;1&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">In-hospital stroke&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1 &#40;8&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">11 &#40;12&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;310&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">In-hospital mortality&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">9 &#40;10&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;506&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
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                0 => "xTab1004253.png"
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          "en" => "<p id="spar0065" class="elsevierStyleSimplePara elsevierViewall">Characteristics of patients with and without mobile echogenic masses&#46;</p>"
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      ]
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        "identificador" => "tbl0020"
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        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
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        "tabla" => array:2 [
          "leyenda" => "<p id="spar0080" class="elsevierStyleSimplePara elsevierViewall">AF&#58; atrial fibrillation&#59; MEI&#58; mobile echogenic masses&#59; MI&#58; myocardial infarction&#46;</p>"
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="table-head  " align="" valign="top" scope="col" style="border-bottom: 2px solid black">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Stroke &#40;n&#61;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">No stroke &#40;n&#61;101&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">p&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Transfemoral approach&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">2 &#40;67&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">79 &#40;78&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;635&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Transapical approach&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1 &#40;33&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">22 &#40;22&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;635&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Hypertension&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">2 &#40;67&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">83 &#40;82&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;493&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Diabetes&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1 &#40;33&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">41 &#40;41&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;640&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Dyslipidemia&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1 &#40;33&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">53 &#40;52&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;513&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Previous stroke&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">19 &#40;19&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;406&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Coronary disease&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">3 &#40;100&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">46 &#40;45&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;063&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Previous MI&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">2 &#40;67&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">11 &#40;10&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;004&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Renal failure&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">25 &#40;24&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;323&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Peripheral vascular disease&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1 &#40;33&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">13 &#40;12&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;306&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Previous AF&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">2 &#40;67&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">42 &#40;41&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;386&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Intracardiac thrombus&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1 &#40;0&#46;9&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;863&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">MEI&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1 &#40;33&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">10 &#40;9&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;230&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">In-hospital mortality&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">9 &#40;8&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;774&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Prosthesis embolization&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">4 &#40;3&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;908&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
              ]
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                0 => "xTab1004250.png"
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            ]
          ]
        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0075" class="elsevierStyleSimplePara elsevierViewall">Characteristics of patients with in-hospital stroke&#46;</p>"
        ]
      ]
    ]
    "bibliografia" => array:2 [
      "titulo" => "References"
      "seccion" => array:1 [
        0 => array:2 [
          "identificador" => "bibs0005"
          "bibliografiaReferencia" => array:24 [
            0 => array:3 [
              "identificador" => "bib0125"
              "etiqueta" => "1"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "2012 ACCF&#47;AATS&#47;SCAI&#47;STS expert consensus document on transcatheter aortic valve replacement"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => true
                          "autores" => array:3 [
                            0 => "D&#46;R&#46; Holmes Jr&#46;"
                            1 => "M&#46;J&#46; Mack"
                            2 => "S&#46; Kaul"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1016/j.jacc.2012.01.001"
                      "Revista" => array:6 [
                        "tituloSerie" => "J Am Coll Cardiol"
                        "fecha" => "2012"
                        "volumen" => "59"
                        "paginaInicial" => "1200"
                        "paginaFinal" => "1254"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/22300974"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            1 => array:3 [
              "identificador" => "bib0130"
              "etiqueta" => "2"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Causes of peri-operative mortality after transcatheter aortic valve implantation&#58; a pooled analysis of 12 studies and 1223 patients"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => true
                          "autores" => array:3 [
                            0 => "R&#46; Moreno"
                            1 => "L&#46; Calvo"
                            2 => "P&#46; Salinas"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:1 [
                      "Revista" => array:6 [
                        "tituloSerie" => "J Invasive Cardiol"
                        "fecha" => "2011"
                        "volumen" => "23"
                        "paginaInicial" => "180"
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                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/21562344"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            2 => array:3 [
              "identificador" => "bib0135"
              "etiqueta" => "3"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Transcatheter versus surgical aortic-valve replacement in high-risk patients"
                      "autores" => array:1 [
                        0 => array:3 [
                          "colaboracion" => "for the PARTNER Trial Investigators"
                          "etal" => true
                          "autores" => array:3 [
                            0 => "C&#46; Smith"
                            1 => "M&#46; Leon"
                            2 => "M&#46; Mack"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:1 [
                      "Revista" => array:4 [
                        "tituloSerie" => "N Engl J Med"
                        "fecha" => "2011"
                        "volumen" => "364"
                        "paginaInicial" => "2187e2198"
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            ]
            3 => array:3 [
              "identificador" => "bib0140"
              "etiqueta" => "4"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Real-time three-dimensional transoesophageal echocardiography for guidance of non-coronary interventions in the catheter laboratory"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:3 [
                            0 => "J&#46; Balzer"
                            1 => "M&#46; Kelm"
                            2 => "H&#46;P&#46; K&#252;hl"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1093/ejechocard/jep006"
                      "Revista" => array:6 [
                        "tituloSerie" => "Eur J Echocardiogr"
                        "fecha" => "2009"
                        "volumen" => "10"
                        "paginaInicial" => "341"
                        "paginaFinal" => "349"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/19211569"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
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              "identificador" => "bib0145"
              "etiqueta" => "5"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Echocardiography-guided interventions"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => true
                          "autores" => array:3 [
                            0 => "F&#46;E&#46; Silvestry"
                            1 => "R&#46;E&#46; Kerber"
                            2 => "M&#46;M&#46; Brook"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1016/j.echo.2008.12.013"
                      "Revista" => array:6 [
                        "tituloSerie" => "J Am Soc Echocardiogr"
                        "fecha" => "2009"
                        "volumen" => "22"
                        "paginaInicial" => "213"
                        "paginaFinal" => "231"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/19258174"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
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Vol. 35. Núm. 3.
Páginas 133-138 (março 2016)
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Vol. 35. Núm. 3.
Páginas 133-138 (março 2016)
Original Article
Open Access
Echogenic mobile images in intraprocedural three-dimensional transesophageal echocardiographic monitoring during percutaneous aortic valve implantation: Incidence, characteristics and clinical implications
Monitorização de imagens ecogénicas móveis intraprocedimento pela ecocardiografia transesofágica 3 D durante a implantação valvular aórtica percutânea: incidência, características e implicações clínicas
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Eduardo Arroyo-Úcara,
Autor para correspondência
earroyoucar@gmail.com

Corresponding author.
, Raúl Morenoa, Susana del Pradoa, Teresa Lópeza, Angel Sánchez-Recaldea, Luis Calvo Orbea, Santiago Jiménez-Valeroa, Guillermo Galeotea, M. Ulises Ramíreza, Rosa Gonzalez Daviab, Ignacio Plazac, José María Mesaa, Jose Luis López-Sendóna
a Hospital La Paz, Madrid, Spain
b Hospital Infanta Cristina, Parla Madrid, Madrid, Spain
c Hospital Infanta Sofía, San Sebastián de los Reyes, Madrid, Spain
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Estatísticas
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Tabelas (4)
Table 1. Baseline characteristics of the study population.
Table 2. Characteristics of mobile echogenic masses.
Table 3. Characteristics of patients with and without mobile echogenic masses.
Table 4. Characteristics of patients with in-hospital stroke.
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Abstract
Introduction and Objectives

To investigate the incidence and clinical relevance of the presence of mobile echogenic images (MEI) during transesophageal echocardiography (TEE) for monitoring of transcatheter aortic valve implantation (TAVI).

Methods

Consecutive patients referred to our center for transfemoral or transapical TAVI were included. The procedure was monitored by three-dimensional (3D) TEE and images were analyzed by two independent experts. In-hospital follow-up was carried out and correlated with imaging findings.

Results

A total of 104 patients were included. MEI were visualized in 11 patients during the procedure (11%) and in over 50% of cases were identified as thrombi, however no differences in periprocedural stroke were found in follow-up.

Conclusions

Visualization of MEI during 3D TEE monitoring of TAVI is relatively common (11%) and in over 50% of cases they are identified as thrombi. The clinical implications of this finding are uncertain, as despite their frequency, the incidence of clinical stroke in this patient population was no higher. 3D TEE is a useful tool for diagnosis of MEI and can alert the operator to their presence.

Keywords:
Transcatheter aortic valve implantation
Three-dimensional
Aortic stenosis
Transaortic valve
Resumo
Introdução e objetivos

Investigar a incidência e relevância clínica da presença de imagens ecogénicas móveis (IEM), através de ecocardiografia transesofágica (ETE) durante a implantação valvular aórtica percutânea (TAVI).

Métodos

Foram incluídos doentes consecutivos referenciados para o nosso centro para realização de TAVI por via transapical ou transfemoral. Foi realizada a monitorização da ETE 3 D e as imagens foram analisadas por dois peritos individualmente. O seguimento foi realizado no hospital e foi correlacionado com achados de imagem.

Resultados

Foram definitivamente incluídos 104 doentes. Durante o procedimento foram visualizadas IEM em 11 pacientes (11%) e,em mais de 50% dos casos, foram identificadas como trombos, não tendo, no entanto, sido encontradas diferenças no seguimento dos doentes.

Conclusões

A visualização das IEM através da monitorização por ETE 3 D durante a TAVI é relativamente comum (11%) e, em mais de 50% dos casos, são identificadas como trombos. As implicações clínicas deste achado são incertas, porque apesar da sua frequência não há maior incidência de acidente vascular cerebral clínico nesta população de doentes. A ETE é uma ferramenta útil para o diagnóstico e pode alertar o operador da sua presença.

Palavras-chave:
Implantação valvular aórtica percutânea
3 D
Estenose aórtica
Válvula transaórtica
Texto Completo
Introduction

Aortic stenosis (AS) is the most prevalent valvular disease in the Western world, and surgical valve replacement remains the standard treatment. However, approximately one third of patients are not referred or are rejected for surgical treatment due to high risk. In recent years, transcatheter aortic valve implantation (TAVI) has emerged as an alternative treatment for these patients.1–3

Different cardiac imaging techniques are essential in the proper selection of patients for TAVI, in intraprocedural monitoring and in subsequent follow-up. Of these techniques, transesophageal echocardiography (TEE) is very helpful for selecting prosthesis size, guiding valve positioning and release, checking the final result and detecting complications.4–6 Moreover, three-dimensional (3D) TEE, due to its ability to characterize soft structures, has a growing role during percutaneous interventions of structural heart disease.

During all the steps of TAVI, mobile echogenic images (MEI) can be observed in some patients. These are defined as small mobile masses, mainly attached to catheters, after valvuloplasty or prosthetic vale implantation, or as remains of the former valve structure.

The aim of our study was to clarify the incidence and clinical significance of MEI detected by 3D TEE, as there are no specifically designed studies for this purpose.

MethodsStudy population and procedure

One hundred and four consecutive patients referred to our center for TAVI were included. The device used in all cases was the Edwards SAPIEN prosthesis, and all procedures were performed under general anesthesia. A transfemoral approach was the first choice, although in cases with minimum peripheral vascular diameter <6 mm or excessive tortuosity implantation was performed by a transapical route.

In transfemoral procedures, surgical exposure of the femoral artery was performed in all except six cases and 100 IU/kg intravenous heparin was administered. Prior to valve implantation, balloon valvuloplasty was performed under rapid ventricular pacing using a temporary pacemaker inserted in the right ventricle.

Echocardiographic monitoring

3D TEE monitoring was performed in all cases, using an iE 33 ultrasound system (Philips).

The presence of MEI during the procedure was assessed, as well as their main echocardiographic characteristics and time of occurrence.

MEI were defined as small mobile masses, mainly attached to catheters, after valvuloplasty or prosthetic valve implantation, or as remains of the former valve structure.

The echocardiographic images were assessed independently by two experts in imaging and monitoring of structural interventional procedures.

Statistical analysis

The data collected were analyzed using SPSS version 20.0 for Mac (SPSS Inc., Chicago, IL, USA). Qualitative variables were expressed as percentages, and quantitative variables as mean ± standard deviation. The chi-square test with Fisher's correction was used for comparison between qualitative variables. A multivariate analysis was performed using logistic regression. Comparison between quantitative variables was performed using the Student's t test. A value of p<0.05 was considered statistically significant.

Results

Out of the 104 patients, 81 (78%) underwent TAVI by a transfemoral approach. The clinical characteristics of the study population are summarized in Table 1.

Table 1.

Baseline characteristics of the study population.

Transfemoral approach  81 (78%) 
Transapical approach  23 (22%) 
Hypertension  85 (82%) 
Diabetes  42 (41%) 
Dyslipidemia  54 (52%) 
Previous stroke  19 (18%) 
Coronary disease  49 (47%) 
Previous MI  13 (12%) 
Renal failure  25 (24%) 
Peripheral vascular disease  14 (13%) 
Atrial fibrillation  44 (42%) 
Intracardiac thrombus  1 (1%) 
MEI  11 (11%) 
In-hospital stroke  3 (3%) 

MEI: mobile echogenic masses; MI: myocardial infarction.

Timing and location of mobile echogenic masses

MEI were visualized during the procedure in 11 patients (11%). Echocardiographic characteristics, including dimensions, time of appearance and disappearance and operator's interpretation, are summarized in Table 2.

Table 2.

Characteristics of mobile echogenic masses.

  Yes  No 
Appearance
Valvuloplasty  1 (10%)  10 (90%) 
Post valvuloplasty  3 (27%)  8 (73%) 
Prosthesis implantation  7 (64%)  4 (36%) 
Disappearance  5 (45%)  6 (55%) 
Location
Ventricle  2 (18%)  9 (82%) 
Catheter  3 (27%)  8 (73%) 
Prosthesis  1 (9%)  10 (90%) 
Aortic root  4 (36%)  7 (64%) 
Ascending aorta  1 (9%)  10 (90%) 
Mobility  11 (100%) 
Calcium  5 (45%)  6 (55%) 
Morphology
Valve structures  5 (45%)  6 (55%) 
Thrombus  6 (55%)  5 (45%) 

In four cases, MEI were observed before valve implantation (one before and three after valvuloplasty), whereas in while cases (64%) they appeared during valve implantation.

Of note, 45% of MEI (n=5) disappeared at the end of the procedure.

MEI were located at the aortic root in four cases (36%), in the left ventricular cavity in two (18%), attached to the catheter in three (27%), and in other locations (the prosthetic valve and the aortic arch) in two patients (18%).

Echocardiographic features of mobile echogenic masses

There was consensus in the identification of MEIs between the two observers in 100% of cases, including their description and main echocardiographic characteristics. They were interpreted as thrombus in 55% of cases, and as remains of native valve structures in 45%.

The size of MEI ranged from 3 mm to 30 mm, and 45% of them had the echocardiographic density of calcium.

Clinical implications of mobile echogenic masses

No statistically significant differences were identified between patients with and without MEI regarding baseline characteristics, type of access, incidence of in-hospital stroke, or in-hospital mortality (Table 3). Three out of the 104 patients had an in-hospital stroke, but in only one of these cases were MEI observed during valve implantation (Table 4). Previous myocardial infarction was the only predictor significantly associated with the occurrence of stroke during hospitalization.

Table 3.

Characteristics of patients with and without mobile echogenic masses.

  MEI (n=12)  No MEI (n=92) 
Transfemoral approach  10 (83%)  79 (91%) 
Transapical approach  2 (17%)  21 (23%) 
Hypertension  10 (83%)  75 (81%) 
Diabetes  3 (25%)  39 (42%)  0.352 
Dyslipidemia  6 (50%)  48 (52%) 
Previous stroke  3 (25%)  16 (17%)  0.456 
Coronary disease  6 (50%)  43 (47%) 
Previous MI  1 (8%)  12 (13%) 
Renal failure  2 (17%)  23 (25%)  0.726 
Peripheral vascular disease  3 (25%)  11 (12%)  0.203 
Previous AF  5 (42%)  39 (42%) 
Intracardiac thrombus  1 (1%) 
In-hospital stroke  1 (8%)  11 (12%)  0.310 
In-hospital mortality  9 (10%)  0.506 

AF: atrial fibrillation; MEI: mobile echogenic masses; MI: myocardial infarction.

Table 4.

Characteristics of patients with in-hospital stroke.

  Stroke (n=3)  No stroke (n=101) 
Transfemoral approach  2 (67%)  79 (78%)  0.635 
Transapical approach  1 (33%)  22 (22%)  0.635 
Hypertension  2 (67%)  83 (82%)  0.493 
Diabetes  1 (33%)  41 (41%)  0.640 
Dyslipidemia  1 (33%)  53 (52%)  0.513 
Previous stroke  19 (19%)  0.406 
Coronary disease  3 (100%)  46 (45%)  0.063 
Previous MI  2 (67%)  11 (10%)  0.004 
Renal failure  25 (24%)  0.323 
Peripheral vascular disease  1 (33%)  13 (12%)  0.306 
Previous AF  2 (67%)  42 (41%)  0.386 
Intracardiac thrombus  1 (0.9%)  0.863 
MEI  1 (33%)  10 (9%)  0.230 
In-hospital mortality  9 (8%)  0.774 
Prosthesis embolization  4 (3%)  0.908 

AF: atrial fibrillation; MEI: mobile echogenic masses; MI: myocardial infarction.

Discussion

This is the first study specifically focused on MEI during TAVI with TEE monitoring. Our findings show that in up to 11% of cases MEI can be observed during 3D TEE monitoring of TAVI procedures. These images are in most cases a thrombus attached to catheters or remains of former valve structures, which represent a potential source of emboli.7 However, we did not observe an increase in the incidence of periprocedural stroke in patients with MEI (Figure 1).

Figure 1.

An 85-year-old woman with a history of severe aortic stenosis who was accepted for transfemoral valve replacement. After the valve was crossed with the hydrophilic wire, a mobile echogenic image (MEI) was observed by the TEE operator and identified as thrombus. 2000 U of heparin were administered, but unfortunately the thrombus embolized. Cerebral angiography was then performed and showed occlusion of the right mid cerebral artery, and thrombectomy was successfully performed. The patient was discharged without neurological deficit. (A) Three-dimensional determination of aortic valvular area (0.6 cm2); (B and C) mobile echogenic image observed during the procedure and identified as thrombus; (D) macroscopic image of the thrombus that was extracted from the right mid cerebral artery.

(0.31MB).

TEE monitoring of non-coronary interventional procedures is an essential safety tool and is considered one of the great challenges of cardiac imaging. Traditional fluoroscopy provides an inaccurate display of soft cardiac structures and is dependent on high doses of iodinated contrast and long exposure to ionizing radiation. Sector scanning and safety of the procedure are better with TEE than with intracardiac echocardiography. In our series, the presence of MEI was highly reproducible by experienced TEE operators, and there was a 100% correlation between two qualified physicians.8 In our experience, 3D TEE is particularly useful for characterization, since real-time imaging provides information about location of MEI, time of onset and relation to cardiac structures, and devices used during the procedure. The characterization of MEI can in some cases help to correct their precipitating factors and thereby minimize the risk of embolism. With the use of 3D TEE, up to 55% of MEI in our series were identified as thrombus attached to the catheters, and probably allowed the operator to modify the precipitating factors and increase the dose of heparin used, thus preventing clinical consequences (stroke or systemic embolism).9,10

Although TAVI is considered an effective and safe therapeutic option for patients with aortic stenosis and high surgical risk, 30-day mortality of patients undergoing this procedure is still around 8%–10%.2 This mortality is largely associated with the main complications inherent to the procedure: vascular complications, device embolization and stroke.11 The prognosis of patients with periprocedural stroke after TAVI is poor and remains one of the limitations of the technique. Previous studies estimated 30-day mortality in these patients at 42.3%, compared with patients without stroke of around 5.1%.12–14

The PARTNER B study showed a higher incidence of stroke at 30 days in patients undergoing TAVI compared with those randomized to medical therapy (5.0% vs. 1.1%, p=0.06).3 The main contributing factors are post-valvuloplasty valve remains, formation of thrombus attached to catheters, erosion of aortic plaques or even thrombosis of the implanted valve. Other factors, such as the presence of spontaneous echo contrast in the left atrium or supraventricular arrhythmias such as atrial fibrillation or flutter, are common and may increase the risk of embolism.15–17 These phenomena were not observed in the PARTNER A study, in which patients undergoing TAVI and surgical aortic valve replacement showed no significant differences in periprocedural stroke rates (3.8% vs. 2.1%, p=0.20).2

In our study, we observed MEI mainly during valve implantation. The Edwards SAPIEN device used in all patients is designed similarly to a stent, being mounted on a balloon, which is inflated to high pressure once it is positioned at the level of the annular plane. Analogously to the compression involved in coronary balloon angioplasty, valve implantation excludes the calcified aortic leaflets, which are compressed between the ring and the valve. Total or partial disintegration of the leaflets, aggravated in most cases by high calcification, makes them into pedunculated mobile structures, with embolic potential.18,19

It is noteworthy that in 45% of cases, the MEI disappeared during the procedure and no correlation with a higher incidence of periprocedural stroke was observed. Previous studies have shown high incidences of brain microbleeds associated with TAVI, with a variable incidence that can approach 70%. There is considerable interest in the clinical, cognitive and functional impairment that these injuries may cause and that in most cases remains unnoticed. The role played in this context by MEI visualized during the procedure remains unclear.20–24

Conclusions

Visualization of MEI during 3D TEE monitoring of TAVI is relatively common (11% of cases in our study). Echocardiographic characterization identifies them in over 50% of cases as thrombi. The clinical implications of this finding are uncertain, as despite their frequency, there was no increased incidence of clinical stroke in this patient population. 3D TEE is a useful tool for diagnosis and can alert the operator to their presence.

Ethical disclosuresProtection of human and animal subjects

The authors declare that no experiments were performed on humans or animals for this study.

Confidentiality of data

The authors declare that they have followed the protocols of their work center on the publication of patient data.

Right to privacy and informed consent

The authors declare that no patient data appear in this article.

Conflicts of interest

The authors have no conflicts of interest to declare.

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