<?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>1028-9933</journal-id>
<journal-title><![CDATA[Revista Información Científica]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. inf. cient.]]></abbrev-journal-title>
<issn>1028-9933</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Ciencias Médicas Guantánamo]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1028-99332022000600007</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Marcadores de oxigenación para la predicción de mortalidad por neumonía causada por la COVID-19]]></article-title>
<article-title xml:lang="en"><![CDATA[Oxygen markers for predicting COVID-19 - related pneumonia mortality]]></article-title>
<article-title xml:lang="pt"><![CDATA[Marcadores de oxigenação para prever mortalidade por pneumonia causada por COVID-19]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[León-Vidal]]></surname>
<given-names><![CDATA[Maricela de]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Elias-Sierra]]></surname>
<given-names><![CDATA[Reinaldo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Pérez]]></surname>
<given-names><![CDATA[Zoila Ibis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Estevan-Soto]]></surname>
<given-names><![CDATA[José Alfredo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bordelois-Abdo]]></surname>
<given-names><![CDATA[Max Santiago]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital General Docente &#8220;Dr. Agostinho Neto&#8221;  ]]></institution>
<addr-line><![CDATA[ Guantánamo]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>101</volume>
<numero>6</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1028-99332022000600007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1028-99332022000600007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1028-99332022000600007&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  En el Hospital General Docente &#8220;Dr. Agostinho Neto&#8221; no se ha evaluado el valor de los marcadores de oxígeno para la predicción de mortalidad por neumonía causada por la COVID-19.  Objetivo:  Determinar el valor de los marcadores de oxigenación para la predicción de mortalidad por neumonía causada por la COVID-19 en el Hospital General Docente &#8220;Dr. Agostinho Neto&#8221; de Guantánamo, Cuba, en el bienio 2020-2021.  Método:  Se realizó un estudio de una cohorte de 276 pacientes con neumonía causada por la COVID-19. Se estudiaron la saturación periférica de oxígeno (SpO2), saturación arterial de oxígeno (SaO2), diferencia alveolo-arterial de oxígeno (DA-aO2), relación presión arterial de oxígeno (PaO2) y fracción inspirada de oxígeno (FiO2) [PaO2/FiO2]. Se determinó la asociación entre variables y el egreso fallecido mediante la técnica de Ji cuadrado de independencia y el cálculo de Odds Ratio (OR).  Resultados:  La variable con mayor valor predictivo positivo fue la SpO2 (87,3 %) menor de 90 mmHg al momento del ingreso. El mayor valor predictivo negativo se registró para la variable DA-aO2 menor de 20 mmHg a las 48 h del ingreso (95,6 %). El riesgo atribuible fue superior para la relación PaO2/FiO2 menor de 300 mmHg (0,59) al momento del ingreso (0,52). El riesgo atribuible porcentual fue mayor para la variable DA-aO2 mayor o igual a 20 mmHg al momento del ingreso (95,8 %) y a las 48 h del ingreso (95,3 %).  Conclusiones:  La anormalidad de la DA-aO2, la relación PaO2/FiO2, la SaO2 y la SpO2, al momento del ingreso y a las 48 horas de este, son predictores de mortalidad en pacientes con COVID-19.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction: The value of oxygen as a prognostic maker of mortality due to COVID-19 pneumonia has not been evaluated at the Hospital General Docente "Dr. Agostinho Neto".  Objective:  To identify the values of oxygenation markers for prognosing mortality caused by COVID-19 pneumonia at the Hospital General Docente "Dr. Agostinho Neto" de Guantánamo, Cuba, throughout period 2020-2021.  Method:  A cohort of 276 patients with COVID-19 pneumonia was studied. Peripheral oxygen saturation (SpO2), arterial oxygen saturation (SaO2), the difference between the oxygen concentration in the alveoli and arterial system (DA-aO2), arterial oxygen pressure ratio (PaO2) and inspired oxygen fraction (FiO2) [PaO2/FiO2] were studied. The association between variables and deceased discharge was determined using the Chi-square technique and the Odds Ratio (OR) calculation.  Results:  The variable with the highest positive predictive value was SpO2 (87.3 %) with a value lower than 90 mmHg at admission. The highest negative predictive value was recorded for the DA-aO2 variable (95.6%), less than 20 mmHg at 48 hours after admission. Attributable risk was higher for PaO2/FiO2 ratio, less than 300 mmHg (0.59), at admission (0.52). Attributable risk percent was higher for the variable DA-aO2 &#8805; 20 mmHg at admission (95.8 %) and at 48 hours after admission (95.3 %).  Conclusions: Abnormal DA-aO2, PaO2/FiO2 ratio, SaO2 and SpO2, at admission and 48 hours after admission, are predictive markers of mortality in patients with COVID-19.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[RESUMO  Introdução:  No Hospital General Docente &#8220;Dr. Agostinho Neto&#8221; não avaliou o valor dos marcadores de oxigênio para a previsão de mortalidade por pneumonia causada pelo COVID-19.  Objetivo:  Determinar o valor dos marcadores de oxigenação para a predição de mortalidade por pneumonia causada por COVID-19 no Hospital General Docente "Dr. Agostinho Neto" de Guantánamo, Cuba, no biênio 2020-2021.  Método:  Foi realizado um estudo de coorte de 276 pacientes com pneumonia causada por COVID-19. Saturação periférica de oxigênio (SpO2), saturação arterial de oxigênio (SaO2), diferença alvéolo-arterial de oxigênio (DA-aO2), relação pressão arterial de oxigênio (PaO2) e fração inspirada de oxigênio (FiO2) [PaO2/FiO2]. A associação entre variáveis e alta por óbito foi determinada por meio da técnica Qui-quadrado de independência e cálculo de Odds Ratio (OR).  Resultados:  A variável com maior valor preditivo positivo foi SpO2 (87,3%) inferior a 90 mmHg no momento da admissão. O maior valor preditivo negativo foi registrado para a variável DA-aO2 inferior a 20 mmHg 48 h após a admissão (95,6%). O risco atribuível foi maior para relação PaO2/FiO2 inferior a 300 mmHg (0,59) no momento da admissão (0,52). O percentual de risco atribuível foi maior para a variável AD-aO2 maior ou igual a 20 mmHg no momento da admissão (95,8%) e 48 horas após a admissão (95,3%).  Conclusões:  A anormalidade da AD-aO2, da relação PaO2/FiO2, SaO2 e SpO2, no momento da admissão e 48 horas após a admissão, são preditores de mortalidade em pacientes com COVID-19.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[COVID-19]]></kwd>
<kwd lng="es"><![CDATA[marcadores de oxigenación]]></kwd>
<kwd lng="es"><![CDATA[neumonía causada por la COVID-19]]></kwd>
<kwd lng="es"><![CDATA[mortalidad]]></kwd>
<kwd lng="es"><![CDATA[factores predictivos]]></kwd>
<kwd lng="en"><![CDATA[COVID-19]]></kwd>
<kwd lng="en"><![CDATA[oxygen markers]]></kwd>
<kwd lng="en"><![CDATA[COVID-19 pneumonia]]></kwd>
<kwd lng="en"><![CDATA[mortality]]></kwd>
<kwd lng="en"><![CDATA[predictive factors]]></kwd>
<kwd lng="pt"><![CDATA[COVID-19]]></kwd>
<kwd lng="pt"><![CDATA[marcadores de oxigenação]]></kwd>
<kwd lng="pt"><![CDATA[pneumonia por COVID-19]]></kwd>
<kwd lng="pt"><![CDATA[mortalidade]]></kwd>
<kwd lng="pt"><![CDATA[fatores preditivos]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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