<?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>S1409-41422020000200012</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Histopatología y Strain auricular en pericarditis constrictiva y miocardiopatía restrictiva]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aparicio-Ortiz]]></surname>
<given-names><![CDATA[Alexis D.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cantú-López]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Escudero-Salamanca]]></surname>
<given-names><![CDATA[Mara]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aranda-Fraustro]]></surname>
<given-names><![CDATA[Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Álvarez-Santana]]></surname>
<given-names><![CDATA[Ricardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Díaz]]></surname>
<given-names><![CDATA[Jesús A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espinola-Zavaleta]]></surname>
<given-names><![CDATA[Nilda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Cardiología Ignacio Chavez Departmento de Cardiología Nuclear ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad La Salle Facultad de Medicina ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Nacional de Cardiología Ignacio Chávez Departmento de Patología ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Autonoma de Ciudad Juarez Instituto de Ciencias Médicas ]]></institution>
<addr-line><![CDATA[Chihuahua ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Autonoma de Nayarit Unidad Académica de Medicina ]]></institution>
<addr-line><![CDATA[Tepic-Nayarit ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Centro Médico ABC, I.A.P Departmento de Echocardiografía ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<volume>22</volume>
<numero>2</numero>
<fpage>12</fpage>
<lpage>17</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1409-41422020000200012&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1409-41422020000200012&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1409-41422020000200012&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La pericarditis constrictiva y la miocardiopatía restrictiva son enfermedades raras caracterizadas por síntomas de insuficiencia cardíaca congestiva. El objetivo de este estudio es mostrar el diagnóstico diferencial de estas dos patologías, mediante strain auricular y establecer su correlación con la histopatología de corazones correspondientes. Se analizan 2 casos clínicos representativos de cada una de estas patologías. Se analizan sus presentaciones clínicas, los datos ecocardiograficos y en ambos casos se realizaron biopsias endomiocardicas con lo cual se presenta la correlación histológica. El strain auricular permitió evaluar la afección de las aurículas, consideramos que el strain auricular disminuido podría estar relacionado con la presencia de fibrosis.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Histopathology and Atrial Strain in Constrictive Pericarditis and restrictive cardiomyopathy Constrictive pericarditis and restrictive cardiomyopathy are rare diseases characterized by congestive heart failure symptoms. The aim of this study is to show the differential diagnosis of these two pathologies using strain and to establish their correlation with histopathology of the corresponding hearts. Two representative clinical cases of each of these pathologies are analyzed. Their clinical presentations, echocardiographic data, and endomyocardial biopsies were performed in both cases, thus presenting the histological correlation. Atrial strain allowed us to evaluate the affection of the atria, we consider that decreased atrial strain could be related to the presence of fibrosis.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[ecocardiografía]]></kwd>
<kwd lng="es"><![CDATA[histopatología]]></kwd>
<kwd lng="es"><![CDATA[strain]]></kwd>
<kwd lng="es"><![CDATA[pericarditis constrictiva]]></kwd>
<kwd lng="es"><![CDATA[miocardiopatía restrictiva.]]></kwd>
<kwd lng="en"><![CDATA[Echocardiography]]></kwd>
<kwd lng="en"><![CDATA[histopathology]]></kwd>
<kwd lng="en"><![CDATA[strain]]></kwd>
<kwd lng="en"><![CDATA[constrictive pericarditis]]></kwd>
<kwd lng="en"><![CDATA[restrictive cardiomyopathy.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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