<?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>0028-3746</journal-id>
<journal-title><![CDATA[Neumología y cirugía de tórax]]></journal-title>
<abbrev-journal-title><![CDATA[Neumol. cir. torax]]></abbrev-journal-title>
<issn>0028-3746</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Neumología y Cirugía de Tórax; Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas; Sociedad Cubana de Neumología; Sociedad Paraguaya de Neumología; Sociedad Boliviana de Neumología.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0028-37462021000100019</article-id>
<article-id pub-id-type="doi">10.35366/99450</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Correlación del índice de severidad por tomografía y pronóstico de pacientes con neumonía por COVID-19]]></article-title>
<article-title xml:lang="en"><![CDATA[Correlation of the severity index by tomography and prognosis of patients with COVID-19 pneumonia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Murrieta-Peralta]]></surname>
<given-names><![CDATA[Estefanía]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chischistz-Condey]]></surname>
<given-names><![CDATA[Ana Patricia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Holguin-Andrade]]></surname>
<given-names><![CDATA[Karina Iliana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cadena-Fernández]]></surname>
<given-names><![CDATA[Arturo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cervantes-Flores]]></surname>
<given-names><![CDATA[Hugo Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Landero]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Murrieta-González]]></surname>
<given-names><![CDATA[Héctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Médico ABC  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<volume>80</volume>
<numero>1</numero>
<fpage>19</fpage>
<lpage>28</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0028-37462021000100019&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0028-37462021000100019&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0028-37462021000100019&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Introducción:  La neumonía por COVID-19 es una enfermedad infecciosa causada por un síndrome respiratorio agudo secundario a coronavirus 2. Se ha propuesto que los hallazgos tomográficos de pacientes con sospecha de infección por COVID-19 sean subclasificados.  Objetivo:  Medir la correlación entre el índice de severidad por tomografía de tórax, así como el grado de afección pulmonar por tomografía y el pronóstico de los pacientes con infección por COVID-19.  Material y métodos:  Se trata de un estudio observacional analítico retrospectivo en el que se analizó a un total de 233 pacientes.  Conclusión:  El índice de severidad podría ser empleado para predecir pacientes que requerirán ventilación mecánica. El porcentaje de volumen pulmonar afectado y respetado fue útil para predecir el ingreso a la UTI, el uso de ventilación mecánica, los días de estancia intrahospitalaria y el desenlace.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Introduction:  COVID-19 pneumonia is a highly infectious disease caused by a respiratory syndrome secondary to coronavirus 2. It has been proposed that the tomographic findings of these patients with suspected COVID-19 infection be subclassified.  Objective:  To measure the correlation between the chest tomography severity index as well as the degree of pulmonary involvement by tomography and the prognosis of patients with COVID-19 infection.  Material and methods:  This is a retrospective analytical observational study in which a total of 233 patients were analyzed.  Conclusion:  We conclude that the severity index could be used to predict patients who will require mechanical ventilation. The percentage of lung volume affected and respected was useful to predict admission to the ICU, use of mechanical ventilation, days of hospital stay and the outcome.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[COVID-19]]></kwd>
<kwd lng="es"><![CDATA[índice de severidad por tomografía]]></kwd>
<kwd lng="es"><![CDATA[volumen pulmonar afectado]]></kwd>
<kwd lng="es"><![CDATA[volumen pulmonar respetado]]></kwd>
<kwd lng="es"><![CDATA[pronóstico]]></kwd>
<kwd lng="en"><![CDATA[COVID-19]]></kwd>
<kwd lng="en"><![CDATA[severity index]]></kwd>
<kwd lng="en"><![CDATA[affected lung volume]]></kwd>
<kwd lng="en"><![CDATA[respected lung volume]]></kwd>
<kwd lng="en"><![CDATA[prognosis]]></kwd>
</kwd-group>
</article-meta>
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