<?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>0034-7523</journal-id>
<journal-title><![CDATA[Revista Cubana de Medicina]]></journal-title>
<abbrev-journal-title><![CDATA[Rev cubana med]]></abbrev-journal-title>
<issn>0034-7523</issn>
<publisher>
<publisher-name><![CDATA[Centro Nacional de Información de Ciencias MédicasEditorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0034-75232022000200010</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Obesidad en la mortalidad de pacientes con insuficiencia cardiaca y fracción de eyección reducida]]></article-title>
<article-title xml:lang="en"><![CDATA[Obesity in the mortality of patients with heart failure and reduced ejection fraction]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chao Pereira]]></surname>
<given-names><![CDATA[Caridad]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hilera Andrade]]></surname>
<given-names><![CDATA[Benjamin]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castellanos Almaguer]]></surname>
<given-names><![CDATA[Dorian]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez Rojas]]></surname>
<given-names><![CDATA[Ángela Rosa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Clínico Quirúrgico &#8220;Hermanos Ameijeiras&#750;  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<volume>61</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0034-75232022000200010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0034-75232022000200010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0034-75232022000200010&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  La asociación entre obesidad y menor mortalidad en pacientes con insuficiencia cardiaca y fracción de eyección del ventrículo izquierdo es controversial.  Objetivo: Evaluar la asociación entre obesidad y mortalidad en pacientes con insuficiencia cardiaca y fracción de eyección reducida.  Métodos:  Se realizó un estudio observacional de cohorte prospectivo en pacientes con insuficiencia cardiaca y fracción de eyección reducida en el período comprendido entre enero del 2010 y diciembre de 2020. La muestra quedó conformada por 173 pacientes. Se evaluó la supervivencia mediante el método de Kaplan-Meier, para estimar el efecto del pronóstico de la variable obesidad sobre la mortalidad. Se utilizó el modelo de regresión de Cox.  Resultados:  Se observó que los pacientes obesos al año de seguimiento tuvieron mejor supervivencia que los que presentaron normopeso (0,6 versus 0,8) a los cinco años presentaron similar supervivencia los tres subgrupos de índice masa corporal (0,6), la mayor mortalidad la presentaron los pacientes bajo peso. La curva de éstos últimos, se distancia del resto de las categorías de IMC, Log Rank p= 0,001. En el modelo de regresión de Cox la obesidad presentó un odd ration OR=´1,159 p=0,648 (intervalo de confianza de 0,615-2,181).  Conclusiones:  En los pacientes con insuficiencia cardiaca con fracción de eyección reducida no se observó el fenómeno de obesidad paradójica en relación a la mortalidad.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  The association between obesity and lower mortality in patients with heart failure and left ventricular ejection fraction is controversial.  Objective:  To evaluate the association between obesity and mortality in patients with heart failure and reduced ejection fraction.  Methods:  An observational prospective cohort study was carried out, from January 2010 to December 2020, in patients with heart failure and reduced ejection fraction. The sample was made up of 173 patients. Survival was evaluated using Kaplan-Meier method to estimate the prognostic effect of the obesity variable on mortality. Cox regression model was used.  Results:  It was observed that obese patients at one year of follow-up had better survival than those with normal weight (0.6 versus 0.8). At five years, the three subgroups of body mass index (0.6) showed similar survival and the highest mortality was observed by low weight patients. The curve of the latter differs from the rest of the BMI categories, Log Rank p=0.001. In the Cox regression model, obesity had an odds ratio OR=´1.159 p=0.648 (confidence interval 0.615-2.181).  Conclusions: In patients with heart failure with reduced ejection fraction, the phenomenon of paradoxical obesity was not observed in relation to mortality.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[insuficiencia cardiaca]]></kwd>
<kwd lng="es"><![CDATA[fracción de eyección reducida]]></kwd>
<kwd lng="es"><![CDATA[obesidad]]></kwd>
<kwd lng="es"><![CDATA[mortalidad]]></kwd>
<kwd lng="en"><![CDATA[heart failure]]></kwd>
<kwd lng="en"><![CDATA[reduced ejection fraction]]></kwd>
<kwd lng="en"><![CDATA[obesity]]></kwd>
<kwd lng="en"><![CDATA[mortality]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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