<?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>S1405-99402025000300004</article-id>
<article-id pub-id-type="doi">10.24875/acm.24000255</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Usefulness of the ACTION ICU score to predict complications requiring critical care in Mexican patients with non-ST-segment elevation myocardial infarction]]></article-title>
<article-title xml:lang="es"><![CDATA[Utilidad de la puntuación ACTION ICU como predictor de complicaciones en pacientes mexicanos con infarto agudo al miocardio sin elevación del segmento ST]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alanís-Naranjo]]></surname>
<given-names><![CDATA[José M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vela-Huerta]]></surname>
<given-names><![CDATA[Agustín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivera-Hermosillo]]></surname>
<given-names><![CDATA[Julio C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villegas-Mayoral]]></surname>
<given-names><![CDATA[José E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Regional 1° de Octubre, ISSSTE Department of Cardiology ]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Regional 1° de Octubre, ISSSTE Coronary Care Unit ]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2025</year>
</pub-date>
<volume>95</volume>
<numero>3</numero>
<fpage>160</fpage>
<lpage>168</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-99402025000300004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-99402025000300004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-99402025000300004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Objective: The Acute Coronary Treatment and Intervention Outcomes Network Intensive Care Unit (ACTION ICU) score is a tool for assessing the risk of complications associated with non-ST-segment elevation myocardial infarction (NSTEMI) requiring intensive care unit (ICU) admission. The study aimed to describe the usefulness of the ACTION ICU score in Mexican patients with NSTEMI.  Methods: A single-center, retrospective, observational, and comparative study of patients with NSTEMI admitted between January 2017 and December 2023; patients with respiratory failure, cardiac arrest, shock, and arrhythmias requiring a pacemaker on admission were excluded from the study. Based on the collected data, the ACTION ICU score was applied to all patients. The cutoff score for ICU admission is 5, with a 9.3% risk of complications. During hospitalization, the composite primary outcome included cardiac arrest, shock, heart block requiring a pacemaker, respiratory failure, stroke, or death. The score’s performance was determined by calculating the area under the curve (AUC).  Results: A total of 345 NSTEMI patients were included; 41 (14.2%) developed the primary outcome. The most common complications were shock (12.5%) and respiratory failure (8.1%). A score of 0 to 5 points was present in 187 patients (54.2%), 10 of whom (5.3%) developed the primary outcome. The score had an AUC of 0.77 [CI 0.64-0.97, p value 0.01].  Conclusions: The ACTION ICU score showed acceptable discriminative ability for identifying patients with NSTEMI who need ICU care, providing a valuable tool to predict complications and implement best practices in medical units with limited resources.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivo: La puntuación ACTION ICU evalúa el riesgo de complicaciones asociadas con el infarto agudo del miocardio sin elevación del segmento ST (IAMSEST) que requieren ingreso a unidad de cuidados intensivos (UCI). El objetivo del estudio fue describir la utilidad de la puntuación ACTION ICU en pacientes mexicanos con IAMSEST.  Métodos: Estudio retrospectivo, observacional y comparativo que incluyo pacientes con IAMSEST admitidos entre enero de 2017 y diciembre de 2023; se excluyeron del estudio los pacientes con insuficiencia respiratoria, paro cardíaco, shock y arritmias que requirieron marcapaso al ingreso. La puntuación ACTION ICU se calculó en función de los datos recopilados. El punto de corte para el ingreso a UCI es 5, con un riesgo de complicaciones del 9.3%. Durante la hospitalización, el desenlace primario compuesto fue paro cardíaco, shock, bloqueo cardiaco que requirió marcapasos, insuficiencia respiratoria, evento cerebrovascular o muerte. El desempeño de la puntuación para predecir complicaciones se determinó mediante el cálculo del área bajo la curva (ABC).  Resultados: Se estudió un total de 345 pacientes con IAMSEST; 41 (14.2%) desarrollaron el desenlace primario. Las complicaciones más frecuentes fueron shock (12.5%) e insuficiencia respiratoria (8.1%). Una puntuación de 0 a 5 puntos estuvo presente en 187 pacientes (54.2%), diez de los cuales (5.3%) desarrollaron el desenlace primario. La puntuación tuvo un ABC de 0.77 [IC 0.64-0.97, valor de p 0.01].  Conclusiones: La puntuación ACTION ICU mostró una capacidad discriminativa aceptable para identificar pacientes con IAMSEST que ameritan manejo en la UCI.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Non-ST-segment elevation myocardial infarction]]></kwd>
<kwd lng="en"><![CDATA[ACTION ICU]]></kwd>
<kwd lng="en"><![CDATA[Acute coronary syndrome]]></kwd>
<kwd lng="en"><![CDATA[Coronary care unit]]></kwd>
<kwd lng="en"><![CDATA[Intensive care unit]]></kwd>
<kwd lng="en"><![CDATA[Complications]]></kwd>
<kwd lng="es"><![CDATA[Infarto agudo de miocardio sin elevación del segmento ST]]></kwd>
<kwd lng="es"><![CDATA[Puntaje ACTION ICU]]></kwd>
<kwd lng="es"><![CDATA[Síndrome coronario agudo]]></kwd>
<kwd lng="es"><![CDATA[Unidad de cuidados coronarios]]></kwd>
<kwd lng="es"><![CDATA[Unidad de cuidados intensivos]]></kwd>
<kwd lng="es"><![CDATA[Complicaciones]]></kwd>
</kwd-group>
</article-meta>
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