<?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>S1405-99402022000400425</article-id>
<article-id pub-id-type="doi">10.24875/acm.21000046</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Killip-Kimball classification in octogenarians with acute coronary syndrome: an 11-year experience]]></article-title>
<article-title xml:lang="es"><![CDATA[Clasificación de Killip-Kimball en octogenarios con síndrome coronario agudo: 11 años de experiencia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramonfaur]]></surname>
<given-names><![CDATA[Diego]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hinojosa-González]]></surname>
<given-names><![CDATA[David E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Paredes-Vázquez]]></surname>
<given-names><![CDATA[José G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Tecnológico y de Estudios Superiores de Monterrey Medicine and Health Sciences ]]></institution>
<addr-line><![CDATA[Monterrey Nuevo León]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>92</volume>
<numero>4</numero>
<fpage>425</fpage>
<lpage>430</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-99402022000400425&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-99402022000400425&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-99402022000400425&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Objective: The objective of the study is to validate the use of the Killip-Kimball classification (KC) as a predictor of outcomes in an octogenarian cohort with acute coronary syndrome.  Methods: A retrospective analysis of patients who underwent a catheterization procedure for acute coronary syndrome (ACS) was performed. ACS was defined as per the American Heart Association guidelines, and included ST-elevation myocardial infarction (STEMI), non-STEMI and Unstable Angina. We determined factors associated with the KC upon admission to the emergency room. Likewise, we compared in-hospital mortality, length of stay, and other outcomes dividing the patients by KC.  Results: A total of 133 patients with a mean age of 83 years were analyzed and assigned a KC from 1 to 4 according to clinical presentation. Each group included 86, 9, 23, and 15 patients, respectively. In-hospital mortality was 12%, 5% in KC-I, 11% in KC-II, 22% in KC-III, and 40% in KC-IV with a significant difference between classes (p = 0.002). In addition, we found higher KC groups to be associated with acute kidney injury during the hospitalization (p &lt; 0.01).  Conclusion: Despite a strong reduction in mortality for elderly patients with ACS in recent decades, patients presenting with ACS and higher KC have a high mortality rate, as described in younger cohorts. KC remains a reliable prognostic tool, with applicability in octogenarian patients.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivo: Validar el uso de la clasificación de Killip- Kimball como predictor de desenlaces en una cohorte de pacientes octogenarios con síndrome coronario agudo.  Métodos: Se realizó un análisis retrospectivo de pacientes sometidos a cateterismo por síndrome coronario agudo (ACS). Se incluyeron infarto al miocardio con y sin elevación del segment ST, así como angina inestable, utilizando las definiciones de la American Heart Association (AHA). Se determinaron los factores que influyeron en la clasificación de Killip-Kimball (KC) al momento de ingreso al hospital. Se comparó la mortalidad, la estancia intrahospitalaria y otros desenlaces, dividiendo a los pacientes por su KC.  Resultados: Un total de 133 pacientes se incluyeron en el análisis y se clasificaron dependiendo de su KC (I-IV). Cada grupo incluyó 86, 9, 23 y 15 pacientes, respectivamente. La edad media fue de 83 años. La mortalidad intrahospitalaria fue de 5, 11, 22 y 40%, respectivamente para cada KC, y 12% global. Hubo una diferencia significativa en la mortalidad por clase (p = 0.002). Adicionalmente, se encontró que a mayor KC, mayor riesgo de lesión renal aguda durante la hospitalización (p &lt; 0.01).  Conclusión: A pesar de una reducción en la mortalidad de adultos mayores con ACS en décadas recients, pacientes con ACS y mayor KC tienen riesgo aumentado de morir, igual que pacientes en grupos de edad menores. La KC continñua siendo una herramienta confiable para la clasificación y con utilidad pronóstica, con aplicabilidad en pacientes mayores de 80 años.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Killip-Kimball]]></kwd>
<kwd lng="en"><![CDATA[Acute coronary syndrome]]></kwd>
<kwd lng="en"><![CDATA[Octogenarian]]></kwd>
<kwd lng="en"><![CDATA[Acute heart failure]]></kwd>
<kwd lng="es"><![CDATA[Killip-Kimball]]></kwd>
<kwd lng="es"><![CDATA[Síndrome coronario agudo]]></kwd>
<kwd lng="es"><![CDATA[Octogenario]]></kwd>
<kwd lng="es"><![CDATA[Insuficiencia cardiaca aguda]]></kwd>
</kwd-group>
</article-meta>
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