que se leu este artigo
array:24 [ "pii" => "S087025512030144X" "issn" => "08702551" "doi" => "10.1016/j.repc.2019.07.009" "estado" => "S300" "fechaPublicacion" => "2020-04-01" "aid" => "1524" "copyright" => "Sociedade Portuguesa de Cardiologia" "copyrightAnyo" => "2020" "documento" => "article" "crossmark" => 1 "licencia" => "http://creativecommons.org/licenses/by-nc-nd/4.0/" "subdocumento" => "fla" "cita" => "Rev Port Cardiol. 2020;39:183-6" "abierto" => array:3 [ "ES" => true "ES2" => true "LATM" => true ] "gratuito" => true "lecturas" => array:1 [ "total" => 0 ] "Traduccion" => array:1 [ "en" => array:20 [ "pii" => "S2174204920301653" "issn" => "21742049" "doi" => "10.1016/j.repce.2019.07.008" "estado" => "S300" "fechaPublicacion" => "2020-04-01" "aid" => "1524" "copyright" => "Sociedade Portuguesa de Cardiologia" "documento" => "article" "crossmark" => 1 "licencia" => "http://creativecommons.org/licenses/by-nc-nd/4.0/" "subdocumento" => "fla" "cita" => "Rev Port Cardiol. 2020;39:183-6" "abierto" => array:3 [ "ES" => true "ES2" => true "LATM" => true ] "gratuito" => true "lecturas" => array:1 [ "total" => 0 ] "en" => array:13 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Original Article</span>" "titulo" => "QT interval greater than 460 ms in multiple electrocardiograms during follow-up in patients with Brugada syndrome: What does it contribute?" "tienePdf" => "en" "tieneTextoCompleto" => "en" "tieneResumen" => array:2 [ 0 => "en" 1 => "pt" ] "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "183" "paginaFinal" => "186" ] ] "titulosAlternativos" => array:1 [ "pt" => array:1 [ "titulo" => "Intervalo QT superior a 460 ms em eletrocardiogramas seriados em doentes com síndrome de Brugada. Qual o seu valor?" ] ] "contieneResumen" => array:2 [ "en" => true "pt" => true ] "contieneTextoCompleto" => array:1 [ "en" => true ] "contienePdf" => array:1 [ "en" => true ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:7 [ "identificador" => "fig0010" "etiqueta" => "Figure 2" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr2.jpeg" "Alto" => 1264 "Ancho" => 1658 "Tamanyo" => 99475 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0060" class="elsevierStyleSimplePara elsevierViewall">Kaplan-Meier analysis of arrhythmic events during follow-up depending on number of ECGs with QTc>460 ms during follow-up. Group 1: patients with no ECGs with QTc>460 ms; Group 2: patients with only one ECG with QTc>460 ms; Group 3: patients with two or more ECGs with QTc>460 ms.</p>" ] ] ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "Marcelo Puga Bravo, Jesús Castro, Yisel Gallardo" "autores" => array:3 [ 0 => array:2 [ "nombre" => "Marcelo" "apellidos" => "Puga Bravo" ] 1 => array:2 [ "nombre" => "Jesús" "apellidos" => "Castro" ] 2 => array:2 [ "nombre" => "Yisel" "apellidos" => "Gallardo" ] ] ] ] ] "idiomaDefecto" => "en" "Traduccion" => array:1 [ "en" => array:9 [ "pii" => "S087025512030144X" "doi" => "10.1016/j.repc.2019.07.009" "estado" => "S300" "subdocumento" => "" "abierto" => array:3 [ "ES" => true "ES2" => true "LATM" => true ] "gratuito" => true "lecturas" => array:1 [ "total" => 0 ] "idiomaDefecto" => "en" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S087025512030144X?idApp=UINPBA00004E" ] ] "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S2174204920301653?idApp=UINPBA00004E" "url" => "/21742049/0000003900000004/v1_202010170736/S2174204920301653/v1_202010170736/en/main.assets" ] ] "itemSiguiente" => array:19 [ "pii" => "S0870255120301499" "issn" => "08702551" "doi" => "10.1016/j.repc.2020.04.003" "estado" => "S300" "fechaPublicacion" => "2020-04-01" "aid" => "1529" "copyright" => "Sociedade Portuguesa de Cardiologia" "documento" => "simple-article" "crossmark" => 1 "licencia" => "http://creativecommons.org/licenses/by-nc-nd/4.0/" "subdocumento" => "dis" "cita" => "Rev Port Cardiol. 2020;39:187-8" "abierto" => array:3 [ "ES" => true "ES2" => true "LATM" => true ] "gratuito" => true "lecturas" => array:1 [ "total" => 0 ] "en" => array:10 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Editorial comment</span>" "titulo" => "Insights into the challenging risk stratification of Brugada syndrome: A complex puzzle to solve" "tienePdf" => "en" "tieneTextoCompleto" => "en" "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "187" "paginaFinal" => "188" ] ] "titulosAlternativos" => array:1 [ "pt" => array:1 [ "titulo" => "Visão sobre o desafio da estratificação de risco na síndrome de Brugada: um puzzle de resolução complexa" ] ] "contieneTextoCompleto" => array:1 [ "en" => true ] "contienePdf" => array:1 [ "en" => true ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "Mário Oliveira" "autores" => array:1 [ 0 => array:2 [ "nombre" => "Mário" "apellidos" => "Oliveira" ] ] ] ] ] "idiomaDefecto" => "en" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S0870255120301499?idApp=UINPBA00004E" "url" => "/08702551/0000003900000004/v4_202006250755/S0870255120301499/v4_202006250755/en/main.assets" ] "en" => array:19 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Original Article</span>" "titulo" => "QT interval greater than 460 ms in multiple electrocardiograms during follow-up in patients with Brugada syndrome: What does it contribute?" "tieneTextoCompleto" => true "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "183" "paginaFinal" => "186" ] ] "autores" => array:1 [ 0 => array:4 [ "autoresLista" => "Marcelo Puga Bravo, Jesús Castro, Yisel Gallardo" "autores" => array:3 [ 0 => array:4 [ "nombre" => "Marcelo" "apellidos" => "Puga Bravo" "email" => array:1 [ 0 => "marcelopuga@hotmail.es" ] "referencia" => array:2 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">a</span>" "identificador" => "aff0005" ] 1 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">*</span>" "identificador" => "cor0005" ] ] ] 1 => array:3 [ "nombre" => "Jesús" "apellidos" => "Castro" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">b</span>" "identificador" => "aff0010" ] ] ] 2 => array:3 [ "nombre" => "Yisel" "apellidos" => "Gallardo" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">a</span>" "identificador" => "aff0005" ] ] ] ] "afiliaciones" => array:2 [ 0 => array:3 [ "entidad" => "Department of Cardiology, Cardiovascular Institute of Havana, Cuba" "etiqueta" => "a" "identificador" => "aff0005" ] 1 => array:3 [ "entidad" => "Department of Arrhythmias and Cardiac Pacing, Cardiovascular Institute of Havana, Cuba" "etiqueta" => "b" "identificador" => "aff0010" ] ] "correspondencia" => array:1 [ 0 => array:3 [ "identificador" => "cor0005" "etiqueta" => "⁎" "correspondencia" => "Corresponding author." ] ] ] ] "titulosAlternativos" => array:1 [ "pt" => array:1 [ "titulo" => "Intervalo QT superior a 460 ms em eletrocardiogramas seriados em doentes com síndrome de Brugada. Qual o seu valor?" ] ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:7 [ "identificador" => "fig0005" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 920 "Ancho" => 1667 "Tamanyo" => 158366 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0055" class="elsevierStyleSimplePara elsevierViewall">Electrocardiogram with coved pattern showing QT interval calculated by the tangent method.</p>" ] ] ] "textoCompleto" => "<span class="elsevierStyleSections"><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0075">Introduction</span><p id="par0005" class="elsevierStylePara elsevierViewall">Brugada syndrome (BrS) is a channelopathy associated with syncope or sudden cardiac death (SCD) due to malignant ventricular arrhythmias (MVA).<a class="elsevierStyleCrossRef" href="#bib0095"><span class="elsevierStyleSup">1</span></a> Risk stratification in those who have presented aborted sudden death presents a significant challenge for medical personnel, who need to decide between conservative treatment, pharmacological therapy with quinidine, or placement of an implantable cardioverter-defibrillator (ICD).<a class="elsevierStyleCrossRefs" href="#bib0100"><span class="elsevierStyleSup">2–5</span></a> Prolongation of certain electrocardiographic parameters that reflect ventricular depolarization-repolarization, such as corrected QT interval (QTc) or T peak-T end interval, has been associated with an increased risk of MVA.<a class="elsevierStyleCrossRefs" href="#bib0120"><span class="elsevierStyleSup">6–8</span></a> This study was designed to assess the presence of QTc>460 ms in multiple electrocardiograms (ECGs) during follow-up, as a predictor of recurrence of MVA in patients with BrS.</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0080">Methods</span><p id="par0010" class="elsevierStylePara elsevierViewall">A retrospective study was performed at the Institute of Cardiology and Cardiovascular Surgery, Havana, Cuba, which included patients between June 2000 and January 2018.</p></span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0085">Study population</span><p id="par0015" class="elsevierStylePara elsevierViewall">Forty-three patients with BrS and an ICD who underwent serial ECGs during follow-up (after ICD implantation, after one month, after three months and every six months thereafter) who did not present the exclusion criterion of less than three ECGs were included in the study. The sample was divided into three groups: Group 1 (patients with no ECGs with QTc>460 ms); Group 2 (patients with only one ECG with QTc>460 ms); and Group 3 (patients with two or more ECGs with QTc>460 ms). For the purposes of this study a value of QTc>460 ms was considered as a predictor of MVA based on the study by Castro et al.<a class="elsevierStyleCrossRef" href="#bib0120"><span class="elsevierStyleSup">6</span></a> MVA were defined as ventricular tachycardia or ventricular fibrillation events identified by the ICD.</p></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0090">Electrocardiographic measurements</span><p id="par0020" class="elsevierStylePara elsevierViewall">Each participant underwent a 12-lead ECG using a Cardiocid BB electrocardiograph at a paper speed of 25 mm/s. A coved-type pattern was defined as ≥2 mm ST-segment elevation with type 1 morphology in one or both of the right precordial leads V1 and V2 positioned in the second, third or fourth intercostal space.<a class="elsevierStyleCrossRef" href="#bib0105"><span class="elsevierStyleSup">3</span></a> Electrocardiographic measurements were performed manually. The QT interval was measured in all 12 leads from the beginning of the QRS complex to the end of the T wave, defined as the insertion of the tangent of the descending portion of the T wave and the isoelectric line (<a class="elsevierStyleCrossRef" href="#fig0005">Figure 1</a>). The lead showing the longest QT was used.<a class="elsevierStyleCrossRef" href="#bib0135"><span class="elsevierStyleSup">9</span></a> QTc was calculated by Bazett's formula.<a class="elsevierStyleCrossRef" href="#bib0140"><span class="elsevierStyleSup">10</span></a> The measurements were performed by two independent observers, and in the case of a difference of >20 ms a third measurement was performed by another observer.</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0095">Statistical analysis</span><p id="par0025" class="elsevierStylePara elsevierViewall">The statistical package IBM SPSS was used for data analysis. Continuous variables were presented as mean ± standard deviation and categorical variables as numbers and percentages. A value of p<0.05 was considered significant, between 0.01 and 0.05 moderately significant and <0.01 as highly significant. Group differences were analyzed by one-way analysis of variance followed by Scheffé’s multiple comparison tests. Continuous variables were compared using the dependent-samples t test. Kaplan-Meier survival curves were plotted, and the log-rank test was used to compare the curves.</p></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0100">Results</span><p id="par0030" class="elsevierStylePara elsevierViewall"><a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a> summarizes the characteristics of the three groups. Male gender was predominant in all three groups. In the overall population, most presented a spontaneous coved-type pattern at diagnosis, more than 80% were symptomatic, and about 80% underwent programmed electrical stimulation, which was positive in around a quarter. In patients with two or more ECGs with QTc>460 ms (Group 3), a family history of SCD (p=0.023), previous history of cardiorespiratory arrest (p=0.032), syncope (p=0.039), and documented MVA (p=0.002) were significantly more frequent.</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><p id="par0035" class="elsevierStylePara elsevierViewall">A total of 289 ECGs were performed, 63% of them in Group 1. In Group 3 the proportion of ECGs with coved-type pattern was greater, with a statistically significant difference (p=0.002). In the overall sample 41 ECGs were obtained with QTc>460 ms from 16 patients (Groups 2 and 3), accounting for 49% of the ECGs in these two groups (105 ECGs), meaning an ECG with QTc>460 ms appeared in one in two ECGs performed.</p><p id="par0040" class="elsevierStylePara elsevierViewall">On the Kaplan-Meier curve for cumulative event-free survival (<a class="elsevierStyleCrossRef" href="#fig0010">Figure 2</a>), 67% of BrS patients in Group 3 had events during follow-up, as opposed to only 22% of Group 1 and 14% of Group 2 (Group 1 vs. Group 2, p=0.33015; Group 1 vs. Group 3, p=0.04295; and Group 2 vs. Group 3, p=0.04155).</p><elsevierMultimedia ident="fig0010"></elsevierMultimedia></span><span id="sec0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0105">Discussion</span><p id="par0045" class="elsevierStylePara elsevierViewall">In 2003 Pitzalis et al.<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">11</span></a> demonstrated that the QTc interval in V2 is prolonged in coved-type compared to non-coved-type ECGs in BrS patients. Later Castro et al.<a class="elsevierStyleCrossRef" href="#bib0120"><span class="elsevierStyleSup">6</span></a> highlighted the usefulness of QTc>460 ms in V2 as a predictor of risk of MVA. The present study showed similar findings, as the maximum values of QTc in Groups 2 and 3 were found in V1 and/or V2, which electrically rules out an associated long QT syndrome, as prolonged QTc in DII and V6 is characteristic of the latter entity.<a class="elsevierStyleCrossRef" href="#bib0150"><span class="elsevierStyleSup">12</span></a></p><p id="par0050" class="elsevierStylePara elsevierViewall">In our study, among patients with QTc>460 ms (Groups 2 and 3), this value was recorded in just 49% of ECGs performed (41 of 105 ECGs), demonstrating the wide variability of QTc, which has been described by several authors including Goldenberg et al.<a class="elsevierStyleCrossRef" href="#bib0155"><span class="elsevierStyleSup">13</span></a> and Baumert et al.<a class="elsevierStyleCrossRef" href="#bib0160"><span class="elsevierStyleSup">14</span></a> Physiologically, QT presents variations in beat-to-beat measurements reflecting variations in ventricular depolarization-repolarization related to changes in autonomic tone, although under stable conditions this variability is low.<a class="elsevierStyleCrossRef" href="#bib0160"><span class="elsevierStyleSup">14</span></a> It has been shown that in long QT syndrome there is a relationship between beat-to-beat QT variability and reduced repolarization reserve.<a class="elsevierStyleCrossRefs" href="#bib0165"><span class="elsevierStyleSup">15–17</span></a> On the other hand, it has been demonstrated that administration of a sodium channel blocker increased the standard deviation of the QTc interval in the right precordial leads in patients with BrS.<a class="elsevierStyleCrossRef" href="#bib0180"><span class="elsevierStyleSup">18</span></a> This variability may explain the presence or absence of QTc>460 ms in patients with BrS; however, the authors have found no published data that identify a relationship between multiple ECGs with QTc>460 ms and the presence of MVA.</p></span><span id="sec0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0110">Study limitations</span><p id="par0055" class="elsevierStylePara elsevierViewall">Significant intra- and interobserver variability in manual measurements of QT has been demonstrated in various publications, so we would expect this to also occur in the other electrocardiographic parameters. Another limitation is the small number of patients in the sample studied.</p></span><span id="sec0045" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0115">Conclusion</span><p id="par0060" class="elsevierStylePara elsevierViewall">In conclusion, our data demonstrated that the presence of a QTc interval >460 ms on more than one ECG during follow-up enhances the risk of MVA in patients with BrS.</p></span><span id="sec0050" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0120">Conflicts of interest</span><p id="par0065" class="elsevierStylePara elsevierViewall">The authors have no conflicts of interest to declare.</p></span></span>" "textoCompletoSecciones" => array:1 [ "secciones" => array:15 [ 0 => array:3 [ "identificador" => "xres1354551" "titulo" => "Abstract" "secciones" => array:5 [ 0 => array:2 [ "identificador" => "abst0005" "titulo" => "Introduction" ] 1 => array:2 [ "identificador" => "abst0010" "titulo" => "Objective" ] 2 => array:2 [ "identificador" => "abst0015" "titulo" => "Methods" ] 3 => array:2 [ "identificador" => "abst0020" "titulo" => "Results" ] 4 => array:2 [ "identificador" => "abst0025" "titulo" => "Conclusions" ] ] ] 1 => array:2 [ "identificador" => "xpalclavsec1245500" "titulo" => "Keywords" ] 2 => array:3 [ "identificador" => "xres1354552" "titulo" => "Resumo" "secciones" => array:5 [ 0 => array:2 [ "identificador" => "abst0030" "titulo" => "Introdução" ] 1 => array:2 [ "identificador" => "abst0035" "titulo" => "Objetivo" ] 2 => array:2 [ "identificador" => "abst0040" "titulo" => "Métodos" ] 3 => array:2 [ "identificador" => "abst0045" "titulo" => "Resultados" ] 4 => array:2 [ "identificador" => "abst0050" "titulo" => "Conclusões" ] ] ] 3 => array:2 [ "identificador" => "xpalclavsec1245499" "titulo" => "Palavras-chave" ] 4 => array:2 [ "identificador" => "sec0005" "titulo" => "Introduction" ] 5 => array:2 [ "identificador" => "sec0010" "titulo" => "Methods" ] 6 => array:2 [ "identificador" => "sec0015" "titulo" => "Study population" ] 7 => array:2 [ "identificador" => "sec0020" "titulo" => "Electrocardiographic measurements" ] 8 => array:2 [ "identificador" => "sec0025" "titulo" => "Statistical analysis" ] 9 => array:2 [ "identificador" => "sec0030" "titulo" => "Results" ] 10 => array:2 [ "identificador" => "sec0035" "titulo" => "Discussion" ] 11 => array:2 [ "identificador" => "sec0040" "titulo" => "Study limitations" ] 12 => array:2 [ "identificador" => "sec0045" "titulo" => "Conclusion" ] 13 => array:2 [ "identificador" => "sec0050" "titulo" => "Conflicts of interest" ] 14 => array:1 [ "titulo" => "References" ] ] ] "pdfFichero" => "main.pdf" "tienePdf" => true "fechaRecibido" => "2018-07-25" "fechaAceptado" => "2019-07-21" "PalabrasClave" => array:2 [ "en" => array:1 [ 0 => array:4 [ "clase" => "keyword" "titulo" => "Keywords" "identificador" => "xpalclavsec1245500" "palabras" => array:4 [ 0 => "Brugada syndrome" 1 => "Malignant ventricular arrhythmias" 2 => "QT interval" 3 => "Sudden cardiac death" ] ] ] "pt" => array:1 [ 0 => array:4 [ "clase" => "keyword" "titulo" => "Palavras-chave" "identificador" => "xpalclavsec1245499" "palabras" => array:4 [ 0 => "Síndrome de Brugada" 1 => "Arritmias ventriculares malignas" 2 => "Intervalo QT" 3 => "Morte súbita cardíaca" ] ] ] ] "tieneResumen" => true "resumen" => array:2 [ "en" => array:3 [ "titulo" => "Abstract" "resumen" => "<span id="abst0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Introduction</span><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Corrected QT interval (QTc) >460 ms in the right precordial leads has been described as a predictor of malignant ventricular arrhythmias (MVA) in patients with Brugada syndrome (BrS).</p></span> <span id="abst0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0015">Objective</span><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">To assess the presence of QTc>460 ms in multiple electrocardiograms (ECGs) during follow-up as a predictor of recurrence of MVA in patients with BrS.</p></span> <span id="abst0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0020">Methods</span><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">The study group included 43 patients with BrS and an implantable cardioverter-defibrillator. ECGs were performed serially between June 2000 and January 2017. QT interval was measured and QTc was obtained by Bazett's formula. The sample was divided into three groups: Group 1 (patients with no ECGs with QTc>460 ms); Group 2 (patients with only one ECG with QTc>460 ms); and Group 3 (patients with two or more ECGs with QTc>460 ms).</p></span> <span id="abst0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Results</span><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">The following variables were more frequently observed in Group 3: family history of sudden death (p=0.023), previous history of cardiorespiratory arrest (p=0.032), syncope (p=0.039), documented MVA (p=0.002), and proportion of ECGs with coved-type ST interval during follow-up (p=0.002). In Group 3, 67% of BrS patients had events during follow-up, as opposed to only 22% of Group 1 and 14% of Group 2 (Group 1 vs. Group 2, p=0.33015; Group 1 vs. Group 3, p=0.04295; and Group 2 vs. Group 3, p=0.04155).</p></span> <span id="abst0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0030">Conclusions</span><p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">QTc>460 ms in more than one ECG during follow-up increases the risk of MVA events in patients with BrS.</p></span>" "secciones" => array:5 [ 0 => array:2 [ "identificador" => "abst0005" "titulo" => "Introduction" ] 1 => array:2 [ "identificador" => "abst0010" "titulo" => "Objective" ] 2 => array:2 [ "identificador" => "abst0015" "titulo" => "Methods" ] 3 => array:2 [ "identificador" => "abst0020" "titulo" => "Results" ] 4 => array:2 [ "identificador" => "abst0025" "titulo" => "Conclusions" ] ] ] "pt" => array:3 [ "titulo" => "Resumo" "resumen" => "<span id="abst0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0040">Introdução</span><p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">Um intervalo QTc>460 ms nas derivações precordiais direitas foi descrito como um fator preditivo de arritmias ventriculares malignas em doentes com síndrome de Brugada (SB).</p></span> <span id="abst0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0045">Objetivo</span><p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">Avaliar se a presença de QTc>460 ms em eletrocardiogramas (ECGs) seriados durante o seguimento é um fator preditivo de recidiva de arrtimias ventriculares malignas em doentes com SB.</p></span> <span id="abst0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0050">Métodos</span><p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">O grupo de estudo incluiu 43 doentes com SB e com cardioversor-desfibrilhador implantável; os ECGs seriados foram efetuados entre junho de 2000 e janeiro de 2017. Foi medido o intervalo QT, tendo sido o QTc obtido através da fórmula de Bazzet. Os doentes foram divididos em três grupos: Grupo 1 (doentes sem ECGs com QTc>460 ms); Grupo 2 (doentes com apenas um ECG com QTc>460 ms) e Grupo 3 (doentes com dois ou mais ECGs com QTc>460 ms).</p></span> <span id="abst0045" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0055">Resultados</span><p id="spar0045" class="elsevierStyleSimplePara elsevierViewall">As seguintes variáveis foram observadas com mais frequência no Grupo 3: história familiar de morte súbita (p=0,023), história prévia de paragem cardiorrespiratória (p=0,032), síncope (p=0,039), arritmias ventriculares malignas documentadas (p=0,002) e percentagem de ECGs convexos durante o seguimento (p=0,002). No Grupo 3, 67% dos doentes com SB apresentaram eventos durante o seguimento. Por outro lado, no caso dos doentes com SB apenas 22% do Grupo 1 e 14% do Grupo 2 apresentaram eventos durante o seguimento (Grupo 1 <span class="elsevierStyleItalic">versus</span> Grupo 2, p=0,33015; Grupo 1 <span class="elsevierStyleItalic">versus</span> Grupo 3, p=0,04295 e Grupo 2 <span class="elsevierStyleItalic">versus</span> Grupo 3, p=0,04155).</p></span> <span id="abst0050" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0060">Conclusões</span><p id="spar0050" class="elsevierStyleSimplePara elsevierViewall">O QTc>460 ms em mais do que um ECG durante o seguimento aumenta o risco de eventos de arrtimias ventriculares malignas.</p></span>" "secciones" => array:5 [ 0 => array:2 [ "identificador" => "abst0030" "titulo" => "Introdução" ] 1 => array:2 [ "identificador" => "abst0035" "titulo" => "Objetivo" ] 2 => array:2 [ "identificador" => "abst0040" "titulo" => "Métodos" ] 3 => array:2 [ "identificador" => "abst0045" "titulo" => "Resultados" ] 4 => array:2 [ "identificador" => "abst0050" "titulo" => "Conclusões" ] ] ] ] "multimedia" => array:3 [ 0 => array:7 [ "identificador" => "fig0005" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 920 "Ancho" => 1667 "Tamanyo" => 158366 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0055" class="elsevierStyleSimplePara elsevierViewall">Electrocardiogram with coved pattern showing QT interval calculated by the tangent method.</p>" ] ] 1 => array:7 [ "identificador" => "fig0010" "etiqueta" => "Figure 2" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr2.jpeg" "Alto" => 1264 "Ancho" => 1658 "Tamanyo" => 99475 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0060" class="elsevierStyleSimplePara elsevierViewall">Kaplan-Meier analysis of arrhythmic events during follow-up depending on number of ECGs with QTc>460 ms during follow-up. Group 1: patients with no ECGs with QTc>460 ms; Group 2: patients with only one ECG with QTc>460 ms; Group 3: patients with two or more ECGs with QTc>460 ms.</p>" ] ] 2 => array:8 [ "identificador" => "tbl0005" "etiqueta" => "Table 1" "tipo" => "MULTIMEDIATABLA" "mostrarFloat" => true "mostrarDisplay" => false "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at1" "detalle" => "Table " "rol" => "short" ] ] "tabla" => array:2 [ "leyenda" => "<p id="spar0070" class="elsevierStyleSimplePara elsevierViewall">Values are presented as mean ± SD or n (%).</p><p id="spar0075" class="elsevierStyleSimplePara elsevierViewall">ECG: electrocardiogram; MVA: malignant ventricular arrhythmia; PES: programmed electrical stimulation; SCD: sudden cardiac death.</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="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col" style="border-bottom: 2px solid black"> \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col" style="border-bottom: 2px solid black">Group 1 (n=27) \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col" style="border-bottom: 2px solid black">Group 2 (n=7) \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col" style="border-bottom: 2px solid black">Group 3 (n=9) \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col" style="border-bottom: 2px solid black">p \t\t\t\t\t\t\n \t\t\t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td-with-role" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Male gender \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">23 (85) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">3 (78) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">7 (78) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.987 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Age, years \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">43±15 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">44±14 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">46±10 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.933 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Spontaneous coved-type ECG pattern at diagnosis \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">25 (92.5) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">7 (100) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">9 (100) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.411 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Family history of SCD \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">2 (7.4) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">1 (14) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">4 (44.4) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.023 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Symptomatic \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">23 (85) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">5 (71) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">8 (89) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.202 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Cardiorespiratory arrest \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">9 (33.3) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0 (-) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">5 (56) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.032 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Syncope \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">14 (48) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">5 (71) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">4 (44.4) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.039 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">PES \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">21 (77.7) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">7 (100) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">7 (78) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.426 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Positive PES \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">4 (14.8) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">2 (28) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">3 (33.3) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.517 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Documented MVA \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">8 (29.7) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">1 (14) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">6 (66.6) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.002 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Follow-up, months \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">111±60 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">106±45 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">123±57 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.513 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Total ECGs during follow-up \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">184 (63) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">51 (18) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">54 (19) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">- \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Coved-type pattern on ECG during follow-up \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">68 (23.5) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">3.7 (1.2) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">34 (11.8) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.002 \t\t\t\t\t\t\n \t\t\t\t</td></tr></tbody></table> """ ] "imagenFichero" => array:1 [ 0 => "xTab2326090.png" ] ] ] ] "descripcion" => array:1 [ "en" => "<p id="spar0065" class="elsevierStyleSimplePara elsevierViewall">Demographic and clinical characteristics of the study population with Brugada syndrome (n=43).</p>" ] ] ] "bibliografia" => array:2 [ "titulo" => "References" "seccion" => array:1 [ 0 => array:2 [ "identificador" => "bibs0015" "bibliografiaReferencia" => array:18 [ 0 => array:3 [ "identificador" => "bib0095" "etiqueta" => "1" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Right bundle branch block, persistent ST segment elevation and sudden cardiac death: a distinct clinical and electrocardiographic syndrome. 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Ano/Mês | Html | Total | |
---|---|---|---|
2024 Outubro | 64 | 26 | 90 |
2024 Setembro | 120 | 35 | 155 |
2024 Agosto | 107 | 60 | 167 |
2024 Julho | 110 | 41 | 151 |
2024 Junho | 87 | 32 | 119 |
2024 Maio | 65 | 22 | 87 |
2024 Abril | 58 | 39 | 97 |
2024 Maro | 76 | 25 | 101 |
2024 Fevereiro | 82 | 21 | 103 |
2024 Janeiro | 76 | 25 | 101 |
2023 Dezembro | 65 | 20 | 85 |
2023 Novembro | 69 | 42 | 111 |
2023 Outubro | 65 | 13 | 78 |
2023 Setembro | 40 | 21 | 61 |
2023 Agosto | 51 | 27 | 78 |
2023 Julho | 51 | 11 | 62 |
2023 Junho | 45 | 22 | 67 |
2023 Maio | 75 | 33 | 108 |
2023 Abril | 47 | 4 | 51 |
2023 Maro | 71 | 23 | 94 |
2023 Fevereiro | 46 | 24 | 70 |
2023 Janeiro | 23 | 18 | 41 |
2022 Dezembro | 53 | 20 | 73 |
2022 Novembro | 71 | 40 | 111 |
2022 Outubro | 72 | 26 | 98 |
2022 Setembro | 56 | 59 | 115 |
2022 Agosto | 49 | 30 | 79 |
2022 Julho | 48 | 42 | 90 |
2022 Junho | 51 | 41 | 92 |
2022 Maio | 43 | 38 | 81 |
2022 Abril | 57 | 50 | 107 |
2022 Maro | 71 | 56 | 127 |
2022 Fevereiro | 47 | 38 | 85 |
2022 Janeiro | 43 | 48 | 91 |
2021 Dezembro | 31 | 25 | 56 |
2021 Novembro | 46 | 37 | 83 |
2021 Outubro | 53 | 53 | 106 |
2021 Setembro | 46 | 28 | 74 |
2021 Agosto | 60 | 40 | 100 |
2021 Julho | 26 | 21 | 47 |
2021 Junho | 30 | 30 | 60 |
2021 Maio | 53 | 44 | 97 |
2021 Abril | 75 | 54 | 129 |
2021 Maro | 67 | 45 | 112 |
2021 Fevereiro | 47 | 25 | 72 |
2021 Janeiro | 70 | 31 | 101 |
2020 Dezembro | 51 | 32 | 83 |
2020 Novembro | 54 | 31 | 85 |
2020 Outubro | 53 | 26 | 79 |
2020 Setembro | 105 | 40 | 145 |
2020 Agosto | 61 | 36 | 97 |
2020 Julho | 215 | 38 | 253 |
2020 Junho | 162 | 71 | 233 |
2020 Maio | 35 | 18 | 53 |