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Image in Cardiology
Transcatheter mitral valve-in-valve implantation: Role of preprocedural multidetector computed tomography
Implantação mitral transcateter valve-in-valve: papel pré-procedimento da tomografia computadorizada com multidetetores
Carlos Galvão Bragaa,
Corresponding author
carlos.galvaobraga@gmail.com

Corresponding author.
, Mónica Carvalhob, Nuno Ferreirab, Nuno Bettencourtb, Vasco Gamab
a Serviço de Cardiologia, Hospital de Braga, Braga, Portugal
b Serviço de Cardiologia, Centro Hospitalar de Vila Nova de Gaia, Vila Nova de Gaia, Portugal
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          "en" => "<p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Measurement of the internal diameter between the stent posts &#40;arrows&#41; of the previously implanted mitral bioprosthesis&#46;</p>"
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      ]
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    "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">Reoperation after mitral valve surgery due to bioprosthesis dysfunction is associated with high morbidity and mortality&#46; A possible alternative for patients at high surgical risk is transcatheter implantation of a prosthesis in reverse position using the valve-in-valve technique&#46;</p><p id="par0010" class="elsevierStylePara elsevierViewall">Based on our experience with three cases of transcatheter double valve &#40;aortic and mitral&#41; implantation by a transapical approach&#44; we describe the essential steps in preprocedural planning using multidetector computed tomography &#40;MDCT&#41;&#46; The first step is to identify the brand and size of the previously implanted bioprosthesis&#46; The true internal diameter of this valve is then determined by MDCT &#40;mean of major and minor axes&#44; <a class="elsevierStyleCrossRef" href="#fig0005">Figure 1</a>&#41;&#44; which is usually less than the labeled prosthesis size&#46; The true internal diameter should be confirmed by referring to conversion tables or software apps such as ViV<span class="elsevierStyleSup">&#174;</span> &#40;Valve-In-Valve&#41;&#46; The internal diameter between the stent posts of the bioprosthesis is then measured &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Figure 2</a>&#41;&#44; since if this is less than the true internal diameter due to deformation of the stent posts&#44; it can prevent transcatheter valve-in-valve implantation&#46; This information is then used to select the correct size of the valve to be implanted and the procedure can commence&#46;</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><elsevierMultimedia ident="fig0010"></elsevierMultimedia><p id="par0015" class="elsevierStylePara elsevierViewall">MDCT plays an essential role in planning transcatheter mitral valve implantation&#44; to determine the true internal diameter of the dysfunctional bioprosthesis&#44; select the correct size of the replacement valve and prevent periprocedural complications such as the valve becoming wedged against the stent posts&#44; paravalvular leak or valve migration&#46;</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Ethical disclosures</span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Protection of human and animal subjects</span><p id="par0020" class="elsevierStylePara elsevierViewall">The authors declare that no experiments were performed on humans or animals for this study&#46;</p></span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0015">Confidentiality of data</span><p id="par0025" 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="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0020">Right to privacy and informed consent</span><p id="par0030" class="elsevierStylePara elsevierViewall">The authors have obtained the written informed consent of the patients or subjects mentioned in the article&#46; The corresponding author is in possession of this document&#46;</p></span></span><span id="sec0060" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Conflicts of interest</span><p id="par0180" class="elsevierStylePara elsevierViewall">The authors have no conflicts of interest to declare&#46;</p></span></span>"
    "textoCompletoSecciones" => array:1 [
      "secciones" => array:2 [
        0 => array:3 [
          "identificador" => "sec0005"
          "titulo" => "Ethical disclosures"
          "secciones" => array:3 [
            0 => array:2 [
              "identificador" => "sec0010"
              "titulo" => "Protection of human and animal subjects"
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              "titulo" => "Right to privacy and informed consent"
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    "pdfFichero" => "main.pdf"
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    "fechaRecibido" => "2014-04-21"
    "fechaAceptado" => "2014-05-04"
    "NotaPie" => array:1 [
      0 => array:2 [
        "etiqueta" => "&#9734;"
        "nota" => "<p class="elsevierStyleNotepara" id="npar0005">Please cite this article as&#58; Galv&#227;o Braga C&#44; Carvalho M&#44; Ferreira N&#44; Bettencourt N&#44; Gama V&#46; Implanta&#231;&#227;o mitral transcateter <span class="elsevierStyleItalic">valve-in-valve</span>&#58; papel pr&#233;-procedimento da tomografia computadorizada com multidetetores&#46; Rev Port Cardiol&#46; 2014&#59;33&#58;745&#8211;746&#46;</p>"
      ]
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          "en" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Determination of the true internal diameter of a 27-mm Hancock II tissue valve &#40;true diameter&#61;&#40;18&#46;7 mm&#43;23&#46;1 mm&#41;&#47;2&#61;21 mm&#41;&#46;</p>"
        ]
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Article information
ISSN: 21742049
Original language: English
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Revista Portuguesa de Cardiologia (English edition)
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