<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0016-3813</journal-id>
<journal-title><![CDATA[Gaceta médica de México]]></journal-title>
<abbrev-journal-title><![CDATA[Gac. Méd. Méx]]></abbrev-journal-title>
<issn>0016-3813</issn>
<publisher>
<publisher-name><![CDATA[Academia Nacional de Medicina de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0016-38132022000500334</article-id>
<article-id pub-id-type="doi">10.24875/gmm.22000093</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Reparación valvular mitral transcatéter &#8220;borde a borde&#8221;: influencia del sesgo en estudios aleatorizados]]></article-title>
<article-title xml:lang="en"><![CDATA[Transcatheter &#8220;edge-to-edge&#8221; mitral valve repair: influence of bias in randomized trials]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Villarreal]]></surname>
<given-names><![CDATA[Ovidio A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio Mexicano de Cirugía Cardiovascular y Torácica  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2022</year>
</pub-date>
<volume>158</volume>
<numero>5</numero>
<fpage>334</fpage>
<lpage>338</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0016-38132022000500334&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0016-38132022000500334&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0016-38132022000500334&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La regurgitación valvular mitral funcional es el resultado de la desestructuración tridimensional de la válvula mitral debido a disfunción ventricular izquierda. La técnica quirúrgica de &#8220;borde a borde&#8221; ha dado lugar a la técnica transcatéter &#8220;borde a borde&#8221; percutánea (TEER) para tratar la regurgitación valvular mitral funcional; sin embargo, la falta de un anillo protésico por anuloplastia hace a la TEER solo parcialmente efectiva con resultados inciertos a largo plazo. Los estudios MITRA-FR (Multicentre Randomized Study of Percutaneous Mitral Valve Repair MitraClip Device in Patients with Severe Secondary Mitral Regurgitation) y COAPT (Cardiovascular Outcomes Assessment of the MitraClip Percutaneous Therapy for Heart Failure Patients with Functional Mitral Regurgitation), en los cuales están basadas las recomendaciones actuales de la TEER, muestran resultados contradictorios. El posible sesgo de los resultados del COAPT ha influido en las recomendaciones actuales emitidas en las guías de práctica clínica a favor de la TEER en regurgitación valvular mitral funcional.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Functional mitral regurgitation (FMR) is the result of three-dimensional structural disruption of the mitral valve due to left ventricular dysfunction. The &#8220;edge-to-edge&#8221; surgical technique has given rise to the percutaneous transcatheter edge-to-edge repair (TEER) technique to treat FMR; however, the lack of a mitral annuloplasty ring makes TEER only partially effective, with uncertain long-term results. The MITRA-FR and COAPT trials, on which current TEER recommendations are based, show conflicting results. COAPT results possible bias has influenced current recommendations issued by clinical practice guidelines in favor of TEER in FMR.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Insuficiencia mitral]]></kwd>
<kwd lng="es"><![CDATA[MitraClip]]></kwd>
<kwd lng="es"><![CDATA[Regurgitación mitral funcional]]></kwd>
<kwd lng="es"><![CDATA[Técnicas transcatéter]]></kwd>
<kwd lng="es"><![CDATA[Válvula mitral]]></kwd>
<kwd lng="en"><![CDATA[Mitral regurgitation]]></kwd>
<kwd lng="en"><![CDATA[MitraClip]]></kwd>
<kwd lng="en"><![CDATA[Functional mitral regurgitation]]></kwd>
<kwd lng="en"><![CDATA[transcatheter techniques]]></kwd>
<kwd lng="en"><![CDATA[Mitral valve]]></kwd>
</kwd-group>
</article-meta>
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