<?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>1409-4142</journal-id>
<journal-title><![CDATA[Revista Costarricense de Cardiología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. costarric. cardiol]]></abbrev-journal-title>
<issn>1409-4142</issn>
<publisher>
<publisher-name><![CDATA[Asociación Costarricense de Cardiología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1409-41422019000200015</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Miocardiopatía dilatada inducida por hipotiroidismo]]></article-title>
<article-title xml:lang="en"><![CDATA[Thyroid diseases could induce structural and functional changes of the heart]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bolaños Gómez]]></surname>
<given-names><![CDATA[Carlos Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sanabria Garita]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Garzona Navas]]></surname>
<given-names><![CDATA[Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital San Juan de Dios  ]]></institution>
<addr-line><![CDATA[San José ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital San Juan de Dios  ]]></institution>
<addr-line><![CDATA[San José ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital México  ]]></institution>
<addr-line><![CDATA[San José ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<volume>21</volume>
<numero>2</numero>
<fpage>15</fpage>
<lpage>20</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1409-41422019000200015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1409-41422019000200015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1409-41422019000200015&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Las enfermedades tiroideas pueden producir cambios en la estructura y función del corazón. La miocardiopatía dilatada (MCD) con disfunción sistólica inducida por hipotiroidismo, es un fenómeno poco común. El presente artículo describe el caso de un hombre joven que presentó síntomas de insuficiencia cardíaca y se le diagnosticó MCD, con ecocardiografía que revelaba hipoquinesia global y disminución severa de la función sistólica del ventrículo izquierdo. El perfil tiroideo reveló un valor de TSH de 89 UI/dl, con T4 menor a 0.3 ng/ml. Con el tratamiento hormonal se documentó una mejoría progresiva de la función sistólica ventricular izquierda y del cuadro clínico del paciente.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Dilated cardiomyopathy (DCM) with systolic dysfunction provoked by hypothyroidism is an uncommon phenomenon. In this article we describe a case of young male that presented heart failure symptomatology and was diagnosed with DCM, echocardiography showed global hypokinesia with severe left ventricular systolic dysfunction. Thyroid analysis reveled a TSH of 89 IU/dl with T4 under 0.3 ng/ml. We documented progressive improvement of systolic left ventricular function and symptomatology with thyroid replacement therapy.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[insuficiencia cardiaca]]></kwd>
<kwd lng="es"><![CDATA[miocardiopatía dilatada]]></kwd>
<kwd lng="es"><![CDATA[hipotiroidismo]]></kwd>
<kwd lng="es"><![CDATA[hormona tiroidea.]]></kwd>
<kwd lng="en"><![CDATA[heart failure]]></kwd>
<kwd lng="en"><![CDATA[dilated cardiomyopathy]]></kwd>
<kwd lng="en"><![CDATA[hypothyroidism]]></kwd>
<kwd lng="en"><![CDATA[thyroid hormone]]></kwd>
</kwd-group>
</article-meta>
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