<?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>2448-8909</journal-id>
<journal-title><![CDATA[Medicina crítica (Colegio Mexicano de Medicina Crítica)]]></journal-title>
<abbrev-journal-title><![CDATA[Med. crít. (Col. Mex. Med. Crít.)]]></abbrev-journal-title>
<issn>2448-8909</issn>
<publisher>
<publisher-name><![CDATA[Colegio Mexicano de Medicina Crítica A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2448-89092021000500237</article-id>
<article-id pub-id-type="doi">10.35366/102351</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Supervivencia en pacientes con neumonía grave por SARS-CoV-2 con sobreinfección en una Unidad de Cuidados Intensivos]]></article-title>
<article-title xml:lang="en"><![CDATA[Survival in patients with severe SARS-CoV-2 pneumonia with superinfection in an Intensive Care Unit]]></article-title>
<article-title xml:lang="pt"><![CDATA[Sobrevivência em pacientes com pneumonia grave por SARS-CoV-2 com superinfecção em uma Unidade de Terapia Intensiva]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González Pérez]]></surname>
<given-names><![CDATA[Netzahualcóyotl]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villafuerte Toral]]></surname>
<given-names><![CDATA[Griselda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López Carrillo]]></surname>
<given-names><![CDATA[Lilia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto de Seguridad Social del Estado de México y Municipios Centro Médico ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2021</year>
</pub-date>
<volume>35</volume>
<numero>5</numero>
<fpage>237</fpage>
<lpage>242</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2448-89092021000500237&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2448-89092021000500237&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2448-89092021000500237&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Introducción:  La sobreinfección en pacientes con síndrome respiratorio agudo severo por coronavirus 2 (SARS-CoV-2) no está completamente entendida y requiere ser atendida para evitar el uso excesivo de antibióticos.  Material y métodos:  Estudio observacional, retrospectivo, longitudinal, comparativo, en pacientes con neumonía grave por SARS-CoV-2. Se calculó la probabilidad de supervivencia individual acumulada a lo largo de 90 días con el método de Kaplan Meier, en grupos con sobreinfección o ausencia de desarrollo de microorganismos aislados mediante cultivos de secreción bronquial, hemocultivos central y periférico, y urocultivos.  Resultados:  Se reclutaron 82 pacientes, 21 (25.6%) presentaron crecimiento bacteriano o fúngico en cultivos de secreción bronquial, ocho (9.7%) presentaron crecimiento bacteriano en hemocultivos periféricos, cinco (6%) tuvieron desarrollo bacteriano en hemocultivos centrales, y 16 (19.5%) presentaron crecimiento bacteriano o fúngico en urocultivos. La supervivencia en estos pacientes fue menor, sin ser significativa, con respecto a quienes no tuvieron sobreinfección (p = 0.352, 0.280, 0.119, 0.302 respectivamente).  Conclusión:  La sobreinfección en los pacientes con neumonía grave por SARS-CoV-2 no demostró ser un factor asociado a menor supervivencia y aunque la prevalencia de sobreinfección no es despreciable, no hay evidencia suficiente para respaldar el uso generalizado de antibióticos empíricos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Introduction:  Superinfection in patients with severe acute respiratory syndrome by coronavirus 2 (SARS-CoV-2) is not completely understood and requires attention to avoid the excessive use of antibiotics.  Material and methods:  Observational, retrospective, longitudinal, comparative study in patients with severe SARS-CoV-2 pneumonia. The accumulated probability of individual survival over 90 days was calculated with the Kaplan Meier m ethod, in groups with superinfection or absence of development of isolated microorganisms using cultures of bronchial secretion, central and peripheral blood cultures, and urine cultures.  Results:  Eighty-two patients were recruited, 21 (25.6%) presented bacterial or fungal growth in cultures of bronchial secretion, eight (9.7%) presented bacterial growth in peripheral blood cultures, five (6%) had bacterial development in central blood cultures, and 16 (19.5%) presented bacterial or fungal growth in urine cultures. Survival in these patients was lower, without being significant, with respect to those who did not have superinfection, (p = 0.352, 0.280, 0.119, 0.302 respectively).  Conclusion:  Superinfection in patients with severe SARS-CoV-2 pneumonia has not been shown to be a factor associated with lower survival, and although the prevalence of superinfection is not negligible, there is insufficient evidence to support the generalized use of empirical antibiotics.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo:  Introdução:  A superinfecção em pacientes com síndrome respiratória aguda grave pelo coronavírus 2 (SARS-CoV-2) não é totalmente compreendida e requer atenção para evitar o uso excessivo de antibióticos.  Material e métodos:  Estudo observacional, retrospectivo, longitudinal e comparativo em pacientes com pneumonia grave por SARS-CoV-2. A probabilidade acumulada de sobrevida individual em 90 dias foi calculada pelo método de Kaplan Meier, nos grupos com superinfecção ou ausência de desenvolvimento de microrganismos isolados por meio de cultura de secreção brônquica, hemocultura central e periférica e cultura de urina.  Resultados:  Foram recrutados 82 pacientes, 21 (25.6%) apresentaram crescimento bacteriano ou fúngico em culturas de secreção brônquica, 8 (9.7%) apresentaram crescimento bacteriano em hemoculturas periféricas, 5 (6%) apresentaram desenvolvimento bacteriano em hemoculturas centrais, e 16 (19.5%) apresentaram crescimento bacteriano ou fúngico nas culturas de urina. A sobrevida nesses pacientes foi menor, sem ser significativa, em comparação com aqueles que não tiveram superinfecção, (p = 0.352, 0.280, 0.119, 0.302 respectivamente).  Conclusão:  A superinfecção em pacientes com pneumonia grave por SARS-CoV-2 não demonstrou ser um fator associado a menor sobrevida e, embora a prevalência de superinfecção não seja desprezível, não há evidências suficientes para apoiar o uso generalizado de antibióticos empíricos.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="es"><![CDATA[sobreinfección]]></kwd>
<kwd lng="es"><![CDATA[ventilación mecánica]]></kwd>
<kwd lng="es"><![CDATA[supervivencia]]></kwd>
<kwd lng="en"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="en"><![CDATA[superinfection]]></kwd>
<kwd lng="en"><![CDATA[mechanical ventilation]]></kwd>
<kwd lng="en"><![CDATA[survival]]></kwd>
<kwd lng="pt"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="pt"><![CDATA[superinfecção]]></kwd>
<kwd lng="pt"><![CDATA[ventilação mecânica]]></kwd>
<kwd lng="pt"><![CDATA[sobrevivência]]></kwd>
</kwd-group>
</article-meta>
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