<?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>0120-5633</journal-id>
<journal-title><![CDATA[Revista Colombiana de Cardiología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Colomb. Cardiol.]]></abbrev-journal-title>
<issn>0120-5633</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Colombiana de Cardiologia. Oficina de Publicaciones]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-56332021000400324</article-id>
<article-id pub-id-type="doi">10.24875/rccar.m21000062</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efectividad de una unidad de dolor torácico en el primer nivel de atención en salud con telecardiología: un estudio cuasiexperimental de series de tiempo interrumpidas]]></article-title>
<article-title xml:lang="en"><![CDATA[Effectiveness of the chest pain unit at primary level of health care with telecardiology: a quasi-experimental study of interrupted time series]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alzate-Gutiérrez]]></surname>
<given-names><![CDATA[Natalia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Roldán-Toro]]></surname>
<given-names><![CDATA[Hernán]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gallo-Villegas]]></surname>
<given-names><![CDATA[Jaime]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aristizábal-Ocampo]]></surname>
<given-names><![CDATA[Dagnovar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Soluciones Integrales en Riesgo Cardiovascular (SICOR) Centro Clínico y de Investigación ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Antioquia Empresa Prestadora de Servicios de Salud SURAMERICANA (SURA) ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Antioquia Facultad de Medicina ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<volume>28</volume>
<numero>4</numero>
<fpage>324</fpage>
<lpage>333</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-56332021000400324&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-56332021000400324&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-56332021000400324&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: Las unidades de dolor torácico disminuyen la morbimortalidad de los pacientes con síndrome coronario agudo. No obstante, se desconoce su efectividad en el primer nivel de atención con el apoyo de la telecardiología.  Objetivo: Evaluar la efectividad de las unidades de dolor torácico sobre los tiempos de atención, la concordancia diagnóstica y la frecuencia de reconsultas a urgencias y hospitalización.  Método: Estudio cuasiexperimental de series de tiempo interrumpidas, robusto, que incluyó 20,412 pacientes que consultaron al servicio de urgencias por dolor torácico, antes y después de implementar una unidad de dolor torácico. Se analizaron los cambios en la pendiente, el nivel, la autocorrelación y la varianza de los desenlaces estudiados entre ambos periodos (previo y posterior a las unidades de dolor torácico) a 30 días.  Resultados: El promedio de edad fue de 44.9 ± 17.6 años y el 45.8% fueron hombres. La proporción global de pacientes remitidos para hospitalización fue del 9.0%. La pendiente de las tasas de reconsultas a urgencias disminuyó (diferencia: &#8722;1.23; intervalo de confianza del 95% [IC95%]: &#8722;2.46 a &#8722;0.01; p = 0.049) al comparar los dos periodos de observación. Igualmente, la proporción de pacientes remitidos sin síndrome coronario agudo y que finalmente tuvieron este diagnóstico en el tercer nivel de atención disminuyó en el periodo posterior a las unidades de dolor torácico con relación al previo (diferencia: &#8722;8.31; IC95%: &#8722;15.52 a &#8722;1.11; p = 0.020).  Conclusiones: Las unidades de dolor torácico incrementaron los egresos de forma segura, con disminución de las reconsultas a urgencias en los siguientes 30 días por la misma causa. Además, mejoró la concordancia diagnóstica del síndrome coronario agudo, sin modificar los tiempos de atención ni la frecuencia de rehospitalización por enfermedad cardiovascular en el seguimiento.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction: Chest pain units (CPU) decrease morbi-mortality in patients with acute coronary syndrome (ACS). Nevertheless, its effectiveness at primary level of health care with telecardiology support is unknown.  Objective: To evaluate effectiveness of CPU on times of observation, diagnostic agreement and emergency department re-admission and hospitalizations.  Method: Quasi-experimental study of robust interrupted time series, which included 20,412 patients admitted to the emergency department for chest pain, before and after the implementation of a CPU. Changes in slope, level, autocorrelation and, variance between both periods (before-CPU and after-CPU) in outcomes at 30 day follow-up were analyzed.  Results: Subjects had a mean age of 44.9 ± 17.6 years-old and 45.8% were men. The overall rate of hospital admission was 9.0%. The slope of emergency re-consultation rates decreased (difference: &#8722;1.23; 95% CI: &#8722;2.46 to &#8722;0.01; p = 0.049), when comparing the two observation periods. Also, the level of proportion of patients admitted without ACS who finally had an inpatient diagnosis of ACS decreased after-CPU implementation (difference: &#8722;8.31; 95% CI: &#8722;15,52 to &#8722;1.11; p = 0.020).  Conclusions: The CPU increased patient discharge safely with a reduction of 30-day re-admissions. In addition, an improvement in the ACS diagnostic agreement without affecting the time of observation or the frequency of re-hospitalization for cardiovascular disease was obtained during the follow-up.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Dolor en el pecho]]></kwd>
<kwd lng="es"><![CDATA[Síndrome coronario agudo]]></kwd>
<kwd lng="es"><![CDATA[Servicios médicos de urgencia]]></kwd>
<kwd lng="es"><![CDATA[Hospitalización]]></kwd>
<kwd lng="es"><![CDATA[Estudios de series temporales]]></kwd>
<kwd lng="en"><![CDATA[Chest pain]]></kwd>
<kwd lng="en"><![CDATA[Acute coronary syndrome]]></kwd>
<kwd lng="en"><![CDATA[Emergency medical services]]></kwd>
<kwd lng="en"><![CDATA[Hospital admission]]></kwd>
<kwd lng="en"><![CDATA[Time series studies]]></kwd>
</kwd-group>
</article-meta>
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