<?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>1409-0015</journal-id>
<journal-title><![CDATA[Medicina Legal de Costa Rica]]></journal-title>
<abbrev-journal-title><![CDATA[Med. leg. Costa Rica]]></abbrev-journal-title>
<issn>1409-0015</issn>
<publisher>
<publisher-name><![CDATA[Asociación Costarricense de Medicina Forense]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1409-00152017000100303</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Válvula aórtica bivalva con cambios de degeneración mixoide asociados.]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quesada Brenes]]></surname>
<given-names><![CDATA[Francisco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,fquesada95@gmail.com  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2017</year>
</pub-date>
<volume>34</volume>
<numero>1</numero>
<fpage>303</fpage>
<lpage>311</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1409-00152017000100303&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1409-00152017000100303&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1409-00152017000100303&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: En la actualidad con el uso generalizado de los antibióticos, la fiebre reumática ha perdido el primer puesto como causa de afección de las válvulas del corazón, cediéndolo a otras patologías como el debilitamiento del tejido de la válvula ocasionado por la degeneración mixomatosa, el acumulación de calcio en las válvulas denomina degeneración cálcica, o el hecho mismo de nacer con una válvula de forma irregular como lo es válvula aortica bivalva. Precisamente, esto da pie a la presentación del caso de un joven masculino conocido sano de 16 años de edad el cual muere de forma súbita mientras practica el ciclismo de forma recreativa.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Summary: Today with the widespread use of antibiotics, rheumatic fever has lost first place as a cause of disease of the heart valves, ceding it to other pathologies such as the weakening of the tissue of the valve caused by myxomatous degeneration, the accumulation of calcium valves called calcific degeneration, or being born with a valve same irregular shape as bicuspid aortic valve is. Precisely, this leads to the presentation of the case of a healthy young male known 16-year- old who suddenly dies while practicing cycling recreationally.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[degeneración valvular]]></kwd>
<kwd lng="es"><![CDATA[aorta bivalva]]></kwd>
<kwd lng="es"><![CDATA[degeneración mixoide]]></kwd>
<kwd lng="es"><![CDATA[muerte súbita de origen cardiaco]]></kwd>
<kwd lng="es"><![CDATA[estenosis aórtica]]></kwd>
<kwd lng="en"><![CDATA[valvular degeneration]]></kwd>
<kwd lng="en"><![CDATA[bicuspid aortic]]></kwd>
<kwd lng="en"><![CDATA[myxoid degeneration]]></kwd>
<kwd lng="en"><![CDATA[sudden cardiac death]]></kwd>
<kwd lng="en"><![CDATA[aortic stenosis]]></kwd>
</kwd-group>
</article-meta>
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