<?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>1405-9940</journal-id>
<journal-title><![CDATA[Archivos de cardiología de México]]></journal-title>
<abbrev-journal-title><![CDATA[Arch. Cardiol. Méx.]]></abbrev-journal-title>
<issn>1405-9940</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Cardiología Ignacio Chávez]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-99402019000100025</article-id>
<article-id pub-id-type="doi">10.24875/acm.m19000011</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Bloqueo de rama izquierda como equivalente ST, ¿cuándo sí, cuándo no?]]></article-title>
<article-title xml:lang="en"><![CDATA[Left bundle branch block as equivalent of ST-segment elevation myocardial infarction: when yes, when not?]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ceballos-Naranjo]]></surname>
<given-names><![CDATA[Laura]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cardona-Vélez]]></surname>
<given-names><![CDATA[Jonathan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Pontificia Bolivariana Facultad de Medicina ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Antioquia  ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2019</year>
</pub-date>
<volume>89</volume>
<numero>1</numero>
<fpage>25</fpage>
<lpage>30</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-99402019000100025&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-99402019000100025&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-99402019000100025&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La presencia de un bloqueo de rama izquierda del haz de His nuevo o presumiblemente nuevo junto con síntomas isquémicos se ha considerado tradicionalmente un equivalente electrocardiográfico de infarto agudo de miocardio con elevación del segmento ST, el cual debe ser llevado a reperfusión emergente. Para su definición se han propuesto varios criterios, pero ninguno ha alcanzado un rendimiento diagnóstico óptimo. A continuación detallaremos dichos criterios, sus principales problemas y las ventajas que han demostrado.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract A new or presumably new left bundle branch block along with ischemic symptoms has traditionally been considered an electrocardiographic equivalent of ST-segment elevation myocardial infarction, which should be brought to emergent reperfusion. However, several criteria have been proposed for its definition, but none has reached out an optimal diagnostic yield. Below we detail these criteria, their main problems and the advantages they have shown.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Electrocardiografía]]></kwd>
<kwd lng="es"><![CDATA[Infarto agudo de miocardio con elevación del segmento ST]]></kwd>
<kwd lng="es"><![CDATA[Bloqueo de rama izquierda]]></kwd>
<kwd lng="es"><![CDATA[Medicina interna]]></kwd>
<kwd lng="es"><![CDATA[Cardiología]]></kwd>
<kwd lng="es"><![CDATA[Colombia]]></kwd>
<kwd lng="en"><![CDATA[Electrocardiography]]></kwd>
<kwd lng="en"><![CDATA[ST elevation myocardial infarction]]></kwd>
<kwd lng="en"><![CDATA[Left bundle branch block]]></kwd>
<kwd lng="en"><![CDATA[Internal medicine]]></kwd>
<kwd lng="en"><![CDATA[Cardiology]]></kwd>
<kwd lng="en"><![CDATA[Colombia]]></kwd>
</kwd-group>
</article-meta>
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