<?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>S2448-89092022000200091</article-id>
<article-id pub-id-type="doi">10.35366/104870</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Asociación y valor predictivo del índice poder mecánico-distensibilidad pulmonar con días libres de ventilación mecánica en pacientes con COVID-19 en una unidad de terapia intensiva]]></article-title>
<article-title xml:lang="en"><![CDATA[Association and predictive value of the mechanical power-lung compliance index with free days off mechanical ventilation in patients with COVID-19 in an intensive care unit]]></article-title>
<article-title xml:lang="pt"><![CDATA[Associação e valor preditivo do índice de potência mecânica/complacência pulmonar com dias livres de ventilação mecânica em pacientes com COVID-19 em unidade de terapia intensiva]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Turrubiates Hernández]]></surname>
<given-names><![CDATA[Theno Alexandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez Gutiérrez]]></surname>
<given-names><![CDATA[Álvaro Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez Medina]]></surname>
<given-names><![CDATA[Jorge Rosendo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyes Pérez]]></surname>
<given-names><![CDATA[Amalia Angélica]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Morales Hernández]]></surname>
<given-names><![CDATA[José Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Azua Guevara]]></surname>
<given-names><![CDATA[Reyna Isabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Regional Ciudad Madero Petróleos Mexicanos  ]]></institution>
<addr-line><![CDATA[Ciudad Madero Tamaulipas]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<volume>36</volume>
<numero>2</numero>
<fpage>91</fpage>
<lpage>97</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2448-89092022000200091&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2448-89092022000200091&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2448-89092022000200091&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Introducción:  El poder mecánico (PM) se asocia a mortalidad y se debe ajustar a las características pulmonares en pacientes COVID-19.  Material y métodos:  Estudio observacional, retrospectivo y analítico, de septiembre de 2020 a febrero de 2021. Los parámetros de ventilación y análisis de la curva ROC y modelos de regresión de Poisson para OR. Objetivo primario fue determinar la asociación entre el índice PM/Cest y días libres de ventilación mecánica (DLVM).  Resultados:  Se incluyeron 43 pacientes. Se dividió en sobrevivientes (n = 25, 58.1%) y no sobrevivientes (n = 18, 41.9%). Se eligió mediana de DLVM con los parámetros de VMI. El índice PM/Cest inicial ABC 0.73 [IC 95% (0.58-0.88), p = 0.008], punto de corte de 0.90 Joules/min/mL/cm H2O. La regresión multivariable de Poisson el índice PM/Cest inicial OR 0.18 [IC 95% (0.03-0.98), p = 0.047].  Discusión:  Coppola y colaboradores documentaron que en pacientes con SDRA no COVID-19, el valor de PM absoluto no demostró significancia; al ajustarlo a Cest fue independiente para mortalidad.  Conclusiones:  El índice PM/Cest al inicio se asoció de forma significativa e independiente con DLVM en COVID-19. Punto de corte de 0.9 J/min/mL/cmH2O con mejor sensibilidad y especificidad para predecir los DLVM y esto podría reducir la mortalidad.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Introduction:  Mechanical power (MP) is associated with mortality and must be adjusted to the pulmonary characteristics in COVID-19 patients.  Material and methods:  Observational, retrospective, analytical study from September 2020-February 2021. Ventilation parameters and ROC curve analysis and Poisson regression models for OR. Primary objective was to determine the association between the PM/Cest index and free days of mechanical ventilation (FDMV).  Results:  43 patients were included. It was divided into survivors (n = 25, 58.1%) and non-survivors (n = 18, 41.9%). Median FDMV was chosen with the IMV parameters. The initial MP/Cest index ABC 0.73 [95% CI (0.58-0.88), p = 0.008], cut-off point of 0.90 J/min/mL/cmH2O. The multivariate Poisson regression showed the initial MP/Cest index OR 0.18 [95% CI (0.03-0.98), p = 0.047].  Discussion:  Coppola et al. documented in patients with non-COVID-19 ARDS, the absolute MP value did not demonstrate significance; when adjusted to Cest, it was independent for mortality.  Conclusions:  The MP/Cest index at baseline was significantly and independently associated with FDMV in COVID-19. Cut-off point of 0.9 J/min/mL/cmH2O with better sensitivity and specificity to predict FDMV and this could reduce mortality.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo:  Introdução:  A potência mecânica (PM) está associada à mortalidade e deve ser ajustada para características pulmonares em pacientes com COVID-19.  Material e métodos:  Estudo observacional, retrospectivo, analítico de setembro de 2020 a fevereiro de 2021. Os parâmetros ventilatórios, análise da curva ROC e modelos de regressão de Poisson para OR. O objetivo primário foi determinar a associação entre o índice PM/Cest e dias livres de ventilação mecânica (DLVM).  Resultados:  Foram incluídos 43 pacientes. Dividiu-se em sobreviventes (n = 25, 58.1%) e não sobreviventes (n = 18, 41.9%). A mediana do DLVM foi escolhida com os parâmetros do VMI. Índice inicial PM/Cest ABC 0.73 [IC 95% (0.58-0.88), p = 0.008], ponto de corte de 0.90 J/min/mL/cmH2O. Regressão multivariável de Poisson no índice PM/Cest inicial OR 0.18 [IC 95% (0.03-0.98), p = 0.047].  Discussão:  Coppola et al. documentaram em pacientes com SDRA não-COVID-19, o valor de PM absoluto não mostrou significância; quando ajustado a Cest, foi independente para mortalidade.  Conclusões:  O índice PM/Cest ao início se associou de maneira significativa e independentemente com DLVM na COVID-19. Ponto de corte de 0.9 J/min/mL/cmH2O com melhor sensibilidade e especificidade para predizer DLVM e isso poderia reduzir a mortalidade.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Poder mecánico]]></kwd>
<kwd lng="es"><![CDATA[distensibilidad pulmonar]]></kwd>
<kwd lng="es"><![CDATA[COVID-19]]></kwd>
<kwd lng="es"><![CDATA[síndrome de distrés respiratorio agudo]]></kwd>
<kwd lng="es"><![CDATA[días libres de ventilación mecánica]]></kwd>
<kwd lng="en"><![CDATA[Mechanical power]]></kwd>
<kwd lng="en"><![CDATA[lung compliance]]></kwd>
<kwd lng="en"><![CDATA[COVID-19]]></kwd>
<kwd lng="en"><![CDATA[acute respiratory distress syndrome]]></kwd>
<kwd lng="en"><![CDATA[free days from mechanical ventilation]]></kwd>
<kwd lng="pt"><![CDATA[Potência mecânica]]></kwd>
<kwd lng="pt"><![CDATA[complacência pulmonar]]></kwd>
<kwd lng="pt"><![CDATA[COVID-19]]></kwd>
<kwd lng="pt"><![CDATA[síndrome do desconforto respiratório agudo]]></kwd>
<kwd lng="pt"><![CDATA[dias sem ventilação mecânica]]></kwd>
</kwd-group>
</article-meta>
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