<?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>1135-5727</journal-id>
<journal-title><![CDATA[Revista Española de Salud Pública]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Esp. Salud Publica]]></abbrev-journal-title>
<issn>1135-5727</issn>
<publisher>
<publisher-name><![CDATA[Ministerio de Sanidad]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1135-57272021000100186</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[El dióxido de carbono al final de la espiración como signo precoz y valor pronóstico de la recuperación de la circulación espontánea en la parada cardiaca extrahospitalaria. Una revisión sistemática]]></article-title>
<article-title xml:lang="en"><![CDATA[The end-tidal carbon dioxide as an early sign and predictor of the return of spontaneous circulation during out-of-hospital cardiac arrest. A systematic review]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Caro-Alonso]]></surname>
<given-names><![CDATA[Pedro Ángel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A3"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Martín]]></surname>
<given-names><![CDATA[Beatriz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Castilla-La Mancha Facultad de Ciencias de la Salud Departamento de Enfermería, Fisioterapia y Terapia Ocupacional]]></institution>
<addr-line><![CDATA[Toledo ]]></addr-line>
<country>España</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Gerencia de Atención Integrada de Talavera de la Reina Servicio de Salud de Castilla-La-Mancha ]]></institution>
<addr-line><![CDATA[Toledo ]]></addr-line>
<country>España</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,University College of Dublin School of Nursing, Midwifery and Health Systems UCD Health Sciences Centre]]></institution>
<addr-line><![CDATA[Dublín ]]></addr-line>
<country>Irlanda</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<volume>95</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S1135-57272021000100186&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S1135-57272021000100186&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S1135-57272021000100186&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Fundamentos:  No existe evidencia robusta sobre el nivel máximo de dióxido de carbono al final de la espiración (ETCO2) predictor de la recuperación de la circulación espontánea (RCE) tras una parada cardiorrespiratoria extrahospitalaria. El objetivo de este trabajo fue sintetizar y analizar la evidencia disponible sobre la utilidad de la monitorización de los valores del ETCO2 en la parada cardiorrespiratoria extrahospitalaria como signo precoz e indicador pronóstico de la RCE.  Métodos:  Revisión sistemática, con síntesis narrativa de los resultados, de artículos primarios publicados en inglés o castellano en Medline, CINAHL, Web of Science, EMBASE, Proquest, Scopus, Cochrane, ÍnDICEs CSIC y CUIDEN que analizaran la utilidad de la monitorización de los niveles de ETCO2 como signo de la RCE tras una parada cardiorrespiratoria extrahospitalaria. Se siguió la declaración PRISMA. El riesgo de sesgo fue evaluado con la Escala Newcastle-Ottawa.  Resultados:  1.011 fueron encontrados, cumpliendo ocho los criterios de inclusión. Los estudios reportaron una asociación entre el aumento abrupto de ETCO2 y la RCE discrepando en los puntos de corte predictores (un aumento mayor a 10 mmHg y valores iniciales o a los tres minutos mayores de 10 mmHg o 19 mmHg). La calidad metodológica de los estudios fue de moderada a alta.  Conclusiones:  Los valores de ETCO2 se asocian con la RCE en adultos con parada cardiorrespiratoria pudiendo predecir la no supervivencia, por lo que deberían incorporarse a los algoritmos de soporte vital avanzado y a los informes estilo Utstein.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Background:  There is no clear evidence on the maximum level of end-tidal carbon dioxide (ETCO2) predictor of the return of spontaneous circulation (RSC) after an out-of-hospital cardiorespiratory arrest. The aims of this work was to synthesise and analyse the available evidence on the usefulness of monitoring values ETCO2 in an out-of-hospital cardiorespiratory arrest as an early sign and prognostic indicator of the RSC.  Methods:  Systematic review, with narrative synthesis of the results, of primary studies published in English or Spanish was conducted in Medline, CINAHL, Web of Science, EMBASE, Proquest, Scopus, Cochrane, ÍnDICEs CSIC and CUIDEN of studies that analyse the usefulness of monitoring of the level of ETCO2 as a sign of the RSC after an out-of-hospital cardiorespiratory arrest. PRISMA declaration was followed. The risk of bias was assessed with the Newcastle-Ottawa Scale.  Results:  1,011 studies were found, eight of which fulfilled the inclusion criteria. The studies reported an association between the abrupt increase in ETCO2 and RSC to disagree on the predictive cut-off points (an increase than 10 mmHg and initial values or three minutes greater than 10 mmHg or 19 mmHg). The studies were of moderate to high methodological quality.  Conclusions:  ETCO2 values correlate with the RSC in adults with cardiorespiratory arrest and could predict non-survival, so they should be incorporated into advanced life support algorithms and Utstein-style reports.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Adulto]]></kwd>
<kwd lng="es"><![CDATA[Capnografía]]></kwd>
<kwd lng="es"><![CDATA[Dióxido de carbono]]></kwd>
<kwd lng="es"><![CDATA[Paro cardiaco extrahospitalario]]></kwd>
<kwd lng="es"><![CDATA[Volumen residual]]></kwd>
<kwd lng="es"><![CDATA[Revisión sistemática]]></kwd>
<kwd lng="en"><![CDATA[Adult]]></kwd>
<kwd lng="en"><![CDATA[Capnography]]></kwd>
<kwd lng="en"><![CDATA[Carbon dioxide]]></kwd>
<kwd lng="en"><![CDATA[Out-of-hospital cardiac arrest]]></kwd>
<kwd lng="en"><![CDATA[Residual volume]]></kwd>
<kwd lng="en"><![CDATA[Systematic review]]></kwd>
</kwd-group>
</article-meta>
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