<?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>2696-1296</journal-id>
<journal-title><![CDATA[Revista mexicana de medicina familiar]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. med. familiar]]></abbrev-journal-title>
<issn>2696-1296</issn>
<publisher>
<publisher-name><![CDATA[Federación Mexicana de Especialistas y Residentes en Medicina Familiar A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2696-12962022000300086</article-id>
<article-id pub-id-type="doi">10.24875/rmf.22000025</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Oximetría de ingreso hospitalario y proteína c reactiva: pronóstico de mortalidad por COVID-19]]></article-title>
<article-title xml:lang="en"><![CDATA[HOSPITAL ADMISSION OXIMETRY AND C-REACTIVE PROTEIN: PROGNOSIS OF MORTALITY DUE TO COVID-19]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernández-Ortega]]></surname>
<given-names><![CDATA[Miguel A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nájera-Chávez]]></surname>
<given-names><![CDATA[Paola]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ponce-Rosas]]></surname>
<given-names><![CDATA[Efrén R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Dávila-Mendoza]]></surname>
<given-names><![CDATA[Rocío]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Mendoza]]></surname>
<given-names><![CDATA[Omar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñiz-Salinas]]></surname>
<given-names><![CDATA[Daniel A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Pozos]]></surname>
<given-names><![CDATA[Verónica]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Yáñez-Puig]]></surname>
<given-names><![CDATA[Enrique J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gallardo-Santamaría]]></surname>
<given-names><![CDATA[Luis B.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castañón-Ramírez]]></surname>
<given-names><![CDATA[Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santiago-Ramírez]]></surname>
<given-names><![CDATA[Ricardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villalpando-Galicia]]></surname>
<given-names><![CDATA[Yolanda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Medicina Centro de Investigación en Políticas, Población y Salud]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado Hospital Regional Lic. Adolfo López Mateos Servicio de Medicina Interna]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Medicina División de Estudios de Posgrado]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado Hospital Regional Lic. Adolfo López Mateos Servicio de Cirugía Maxilofacial]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado Hospital Regional Lic. Adolfo López Mateos Coordinación de Enlace Hospitalario]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado Hospital Regional Lic. Adolfo López Mateos Servicio de Unidad Coronaria]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af7">
<institution><![CDATA[,Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado Hospital Regional Lic. Adolfo López Mateos Subdirección Médica]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af8">
<institution><![CDATA[,Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado Hospital Regional Lic. Adolfo López Mateos Servicio de Laboratorio Clínico]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2022</year>
</pub-date>
<volume>9</volume>
<numero>3</numero>
<fpage>86</fpage>
<lpage>92</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2696-12962022000300086&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2696-12962022000300086&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2696-12962022000300086&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: Diversos autores han señalado factores asociados con cuadros graves y muerte por enfermedad por coronavirus 2019 (COVID-19) como: edad, sexo, comorbilidades y elevación de marcadores inflamatorios (dímero D, proteína C reactiva e interleucina 6).  Objetivo: Identificar factores asociados a gravedad y muerte en sujetos hospitalizados con neumonía por COVID-19.  Métodos: Estudio transversal, analítico, prospectivo. Se estudiaron 111 sujetos ingresados con diagnóstico de neumonía por COVID-19, con oximetría mayor al 70% y menor al 90%. Se realizó análisis discriminante multivariante, la variable dependiente fue «desenlace» (muerte o alta hospitalaria); se calculó el modelo con el método de inclusión por pasos con cinco variables independientes: edad, proteína C reactiva, ferritina, oximetría al ingreso y comorbilidades.  Resultados: Se estudiaron 111 sujetos con diagnóstico de neumonía por COVID-19. De ellos, 59 (53.15%) eran diabéticos, de los cuales 42 (71%) presentaron complicaciones. Hubo dos variables estadísticamente significativas en la comparación de promedios según el desenlace: los valores de proteína C reactiva (p &lt; 0.000) y oximetría al ingreso hospitalario (p = 0.048).  Conclusiones: El incremento de la proteína C reactiva entre los días 4-7 después del ingreso hospitalario y la oximetría de ingreso inferior al 80% se asoció con mortalidad hospitalaria en el 71% de los casos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Background: Several authors have identified factors associated with severe cases and death due to COVID-19; these include age, sex, comorbidities, and various elevated inflammatory markers such as D-dimer, C-reactive protein (CRP), and interleukin 6.  Objective: To identify prognostic factors associated with severity and death in hospitalized subjects with COVID-19 pneumonia.  Methods: Cross-sectional, analytical, prospective study, based on 111 patients admitted with a diagnosis of COVID-19 pneumonia, with oximetry higher than 70% and less than 90%. Multivariate discriminant analysis was an &#8220;outcome&#8221;, the dependent variable was the &#8220;outcome&#8221; (death or hospital discharge); the model was calculated using the stepwise inclusion method with five independent variables: age, C-reactive protein, ferritin, oximetry on admission and comorbidities.  Results: 111 subjects with a diagnosis of COVID-19 pneumonia were studied. Of these, 59 (53.15%) were diabetic, of whom 42 (71%) presented complications. There were two statistically significant variables in the comparison of averages according to outcome: C-reactive protein values (p&lt;0.000) and oximetry at hospital admission (p=0.048).  Conclusions: Increased C-reactive protein between the fourth and seventh day of hospitalization, and admission oximetry below 80% were associated with in-hospital mortality in 71% of cases.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="es"><![CDATA[COVID-19]]></kwd>
<kwd lng="es"><![CDATA[Complicaciones de diabetes]]></kwd>
<kwd lng="es"><![CDATA[Proteína C reactiva]]></kwd>
<kwd lng="es"><![CDATA[Neumonía]]></kwd>
<kwd lng="es"><![CDATA[Hipoxia]]></kwd>
<kwd lng="en"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="en"><![CDATA[COVID-19]]></kwd>
<kwd lng="en"><![CDATA[Diabetes complications]]></kwd>
<kwd lng="en"><![CDATA[C-reactive protein]]></kwd>
<kwd lng="en"><![CDATA[Pneumonia]]></kwd>
<kwd lng="en"><![CDATA[Hypoxia]]></kwd>
</kwd-group>
</article-meta>
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