<?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>2072-8174</journal-id>
<journal-title><![CDATA[Revista del Nacional (Itauguá)]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Nac. (Itauguá)]]></abbrev-journal-title>
<issn>2072-8174</issn>
<publisher>
<publisher-name><![CDATA[Hospital Nacional (Itauguá)]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2072-81742015000200005</article-id>
<article-id pub-id-type="doi">10.18004/rdn2015.0007.02.020-023</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Fibrilación auricular en un hospital del iInterior de Paraguay]]></article-title>
<article-title xml:lang="en"><![CDATA[Atrial fibrillation of Paraguay hospital interior]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González Galeano1]]></surname>
<given-names><![CDATA[Marcial Carlos Cesar]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Nacional de Caaguazu Facultad de Ciencias Médicas Instructor en las cátedras de Semiología Médica y Clínica Médica]]></institution>
<addr-line><![CDATA[Coronel Oviedo ]]></addr-line>
<country>Paraguay</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2015</year>
</pub-date>
<volume>7</volume>
<numero>2</numero>
<fpage>20</fpage>
<lpage>23</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_arttext&amp;pid=S2072-81742015000200005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_abstract&amp;pid=S2072-81742015000200005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_pdf&amp;pid=S2072-81742015000200005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Introducción: la fibrilación auricular (FA) es la arritmia más frecuente del adulto, representa un factor de riesgo, capaz de desencadenar complicaciones, con elevada morbilidad y mortalidad. Objetivo: determinar la frecuencia de Fibrilación Auricular, en pacientes internados en el Hospital Regional de Coronel Oviedo. Metodología: observacional, transversal, retrospectivo, descriptivo, no probabilístico, donde fueron revisadas 59 historias clínicas, de mujeres y varones mayores de 40 años internados en el área de Clínica Médica del Hospital Regional de Coronel Oviedo entre los meses de enero a diciembre de 2014. Resultados: la edad media fue de 67,5 ± 13 años. La frecuencia de FA es de 11,86%; siendo más frecuente en el sexo masculino con 85,71%, la franja etaria más afectada es la de mayor a 70 años, donde se observó el 71,4% de los casos. Conclusiones: frecuencia de FA es de 11,86%; más frecuente en el sexo masculino y la franja etaria más afecta es la de mayor a 70 años.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Introduction: atrial fibrillation (AF) is the most common adult arrhythmia, represents a risk factor capable of triggering complications with high morbidity and mortality. Objective: to determine the prevalence of AF in patients at the Regional Hospital of Coronel Oviedo. Methodology: observational, cross-sectional, retrospective, descriptive and non-probabilistic, we reviewed 59 medical records of women and men older than 40 years admitted to the area Medical Clinic Regional Hospital of Coronel Oviedo between the months of January to December 2014. Results: mean age was 67.5 ± 13 years. The frequency of AF is 11.86%; being more frequent in males with 85.71%, the most affected age group was that of over 70, where 71.4% of cases was observed. Conclusions: frequency of AF is 11.86%; more frequent in males and the age group most affected by larges is in the over 70 years.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Frecuencia, fibrilación auricular.]]></kwd>
<kwd lng="en"><![CDATA[Frequency, atrial fibrillation.]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="right"><font size="4" face="Verdana, Arial, Helvetica, sans-serif"><b>ARTICULO ORIGINAL</b></font></p>     <p align="center"><font size="3" face="Verdana, Arial, Helvetica, sans-serif"><b>Fibrilaci&oacute;n auricular en un hospital del interior de  Paraguay</b></font></p>     <p align="center"><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>Atrial fibrillation of Paraguay hospital  interior</b></font></p>     <p align="center"><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Marcial  Carlos Cesar Gonz&aacute;lez Galeano<sup><a href="#corres">1</a><a name="autor"></a></sup></font></p> <hr size "1" noshade>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>RESUMEN</b></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>Introducci&oacute;n:</b> la  fibrilaci&oacute;n auricular (FA) es la arritmia m&aacute;s frecuente del adulto, representa  un factor de riesgo, capaz de desencadenar complicaciones, con elevada  morbilidad y mortalidad. <b>Objetivo: </b>determinar  la frecuencia de Fibrilaci&oacute;n Auricular, en pacientes internados en el Hospital  Regional de Coronel Oviedo. <b>Metodolog&iacute;a: </b>observacional, transversal, retrospectivo, descriptivo, no probabil&iacute;stico, donde  fueron revisadas 59 historias cl&iacute;nicas, de mujeres y varones mayores de 40 a&ntilde;os  internados en el &aacute;rea de Cl&iacute;nica M&eacute;dica del Hospital Regional de Coronel Oviedo  entre los meses de enero a diciembre de 2014. <b>Resultados: </b>la edad media fue de 67,5 ± 13 a&ntilde;os. La frecuencia de FA  es de 11,86%; siendo m&aacute;s frecuente en el sexo masculino con 85,71%, la franja  etaria m&aacute;s afectada es la de mayor a 70 a&ntilde;os, donde se observ&oacute; el 71,4% de los  casos. <b>Conclusiones: </b>frecuencia de  FA es de 11,86%; m&aacute;s frecuente en el sexo masculino y la franja etaria m&aacute;s  afecta es la de mayor a 70 a&ntilde;os.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>Palabras claves</b>: Frecuencia,  fibrilaci&oacute;n auricular.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>ABSTRACT</b></font></p> </p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>Introduction</b>: atrial fibrillation (AF) is the most  common adult arrhythmia, represents a risk factor capable of triggering  complications with high morbidity and mortality. <b>Objective</b>: to determine the prevalence of AF in patients at the  Regional Hospital of Coronel Oviedo. <b>Methodology</b>:  observational, cross-sectional, retrospective, descriptive and  non-probabilistic, we reviewed 59 medical records of women and men older than  40 years admitted to the area Medical Clinic Regional Hospital of Coronel  Oviedo between the months of January to December 2014. <b>Results</b>: mean age was 67.5 ± 13 years. The frequency of AF is  11.86%; being more frequent in males with 85.71%, the most affected age group was  that of over 70, where 71.4% of cases was observed. <b>Conclusions</b>: frequency of AF is 11.86%; more frequent in males and  the age group most affected by larges is in the over 70 years.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>Keywords</b>: Frequency, atrial fibrillation.</font>   <hr size "1" noshade>      ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>INTRODUCCI&Oacute;N</b></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">La fibrilaci&oacute;n auricular (FA) es  la arritmia m&aacute;s frecuente en la pr&aacute;ctica cl&iacute;nica en el adulto<sup>1-2</sup>; es poco frecuente en  personas menores de 40 a&ntilde;os; siendo m&aacute;s frecuente en personas mayores de 65  a&ntilde;os<sup>3</sup>; la detecci&oacute;n y el diagn&oacute;stico oportuno de la fibrilaci&oacute;n auricular es una prioridad<sup>4</sup> y  para ello es fundamental un cribado correcto mediante la palpaci&oacute;n del pulso y  un registro electrocardiogr&aacute;fico en todos los pacientes mayores de 65 a&ntilde;os<sup>5-6</sup>. Se estima que la prevalencia en  el mundo es de 1,5% a 2% de la poblaci&oacute;n general, siendo la media de edad entre  75 a 85 a&ntilde;os<sup>7</sup>. En el estudio <em>Framingham</em>la prevalencia de FA es de 12% en  los mayores de 70 a&ntilde;os y de 5% entre los 60 y 70 a&ntilde;os, a cualquier edad la  incidencia de FA es 1,5 veces mayor en el hombre que en la mujer<sup>8</sup>.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Otro dato epidemiol&oacute;gico coincide  con los datos anteriores citados; con una prevalencia de 1  2% de FA en la  poblaci&oacute;n y que se incrementa con la edad<sup>1-9</sup>;  la prevalencia de FA es de 0,5% en pacientes entre 40-50 a&ntilde;os; y de 5 a 15% en  pacientes mayores de 80 a&ntilde;os de edad; afirmando el aumento con la edad<sup>10-11</sup>. Se estima que la  prevalencia se duplicara en las pr&oacute;ximas d&eacute;cadas, debido al envejecimiento  poblacional y el aumento de las comorbilidades asociadas; adem&aacute;s constituye  causa frecuente de internaci&oacute;n, y hay datos que afirman, que representan el 30%  de las internaciones por arritmias<sup>12</sup>.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Aproximadamente 2,2 millones de  personas en los Estados Unidos padecen FA; con una prevalencia del 6% en  pacientes mayores de 65 a&ntilde;os y del 10% en mayores de 80 a&ntilde;os; hay proyecciones  de que 12,1 millones de personas padecer&aacute;n esta enfermedad en el a&ntilde;o 2050<sup>1-13-14</sup>.OFRECE, es el primer  estudio de prevalencia de fibrilaci&oacute;n auricular realizado en Espa&ntilde;a;entre marzo  de 2010 y octubre de 2012; en la poblaci&oacute;n mayor de 40 a&ntilde;os; evalu&oacute; a 8343  personas; cuyo resultado; determino la prevalencia de fibrilaci&oacute;n auricular en  Espa&ntilde;a de 4,4%, donde no hubo diferencia seg&uacute;n sexo; donde las personas m&aacute;s  afectadas eran mayores de 60 a&ntilde;os y al  analizar a la poblaci&oacute;n mayor de 80 a&ntilde;os la prevalencia en este grupo etario  fue de 17,7%; un dato importante es que el 10% de las personas sometidas al  estudio padecen de fibrilaci&oacute;n auricular no diagnosticada<sup>15</sup>.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">En Chile, un estudio de prevalencia de las enfermedades cr&oacute;nicas  no transmisibles en 520 fallecidos en un servicio de medicina interna,  determino una prevalencia de fibrilaci&oacute;n  auricular de 16,5%<sup>16</sup>; otro estudio realizado en dicho pa&iacute;s, comparo  hospitalizaciones relacionadas a la FA desde el a&ntilde;o 2002 al 2007; y estableci&oacute;  la tasa de egresos hospitalarios con fibrilaci&oacute;n auricular de 2,2/10.000 habitantes en los a&ntilde;os 2002-2003;  2,4/10.000 habitantes en 2004-2005; y  aumento en 2,6 a 2,8/10.000 habitantes en los a&ntilde;os 2006 y 2007 respectivamente,  siendo m&aacute;s frecuente en el sexo masculino<sup>17</sup>.  Se calcula que aproximadamente 1,5 millones de personas viven con fibrilaci&oacute;n  auricular en Brasil<sup>18; </sup>un estudio realizado sobre fibrilaci&oacute;n  auricular en la Argentina demostr&oacute; la prevalencia  mayor en el sexo masculino; y la edad en promedio m&aacute;s afecta fue de 71 a&ntilde;os<sup>19</sup>.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">El  riesgo de padecer ictus aumenta 5 veces en las personas con fibrilaci&oacute;n  auricular, comparada con la poblaci&oacute;n general, incluso aumenta alrededor de  1,5% m&aacute;s en pacientes con fibrilaci&oacute;n auricular en pacientes entre 50-59 a&ntilde;os  de edad, y de 23% entre 80-89 a&ntilde;os<sup>20</sup>.  Hay estimaciones de que 1 de cada 4 ictus isqu&eacute;mico son de origen  cardioemb&oacute;lico y la fibrilaci&oacute;n auricular representa el 50% de estos casos<sup>21</sup>; la monitorizaci&oacute;n permanente  electrocardiogr&aacute;fica, en pacientes con ictus agudo, ha identificado fibrilaci&oacute;n  auricular asintom&aacute;tica en 1 de cada 20  pacientes que padecieron este evento neurol&oacute;gico<sup>22</sup>; incluso muchos  pacientes con fibrilaci&oacute;n auricular jam&aacute;s fueron hospitalizados<sup>23</sup>.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Por  lo mencionado, m&aacute;s arriba se puede comprobar la alta morbilidad y mortalidad  que representa la fibrilaci&oacute;n auricular; y que su consecuencia m&aacute;s frecuente,  el ictus, desencadena incapacidad, dependencia, deterioro de la calidad de  vida, y un aumento significativo del gasto al sistema de salud publica<sup>24</sup>. Al abordar un  paciente portador de fibrilaci&oacute;n auricular; su estratificaci&oacute;n correcta y el inicio de un tratamiento, puede  prevenir la formaci&oacute;n de &eacute;mbolos y por ende reducir el riesgo de ictus<sup>3</sup>.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Esta enfermedades un problema de salud p&uacute;blica, relacionadas  directamente con la fibrilaci&oacute;n auricular; y la falta de registros epidemiol&oacute;gicos,  hace necesario hallar la prevalencia de fibrilaci&oacute;n auricular en un centro  asistencial de referencia del interior de Paraguay, como el Hospital Regional  de Coronel Oviedo.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>OBJETIVO GENERAL</b></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Determinar  la frecuencia de fibrilaci&oacute;n  auricular, en pacientes internados en el Hospital Regional de  Coronel Oviedo.</font></p>     ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>OBJETIVOS ESPEC&Iacute;FICOS</b></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Describir  las caracter&iacute;sticas socio demogr&aacute;ficas.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Se&ntilde;alar  el g&eacute;nero que padece fibrilaci&oacute;n auricular con mayor frecuencia. </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Determinar  la franja etaria donde es m&aacute;s frecuente la fibrilaci&oacute;n auricular.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>MATERIAL Y M&Eacute;TODOS</b></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>Dise&ntilde;o:</b> Observacional, transversal,  retrospectivo, descriptivo, no probabil&iacute;stico.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>Sujetos  de estudio</b>: mujeres y hombres mayores de 40 a&ntilde;os, internados en el servicio de  Cl&iacute;nica M&eacute;dica del Hospital Regional de Coronel Oviedo entre los meses de enero  a diciembre de 2014. </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>Criterios de  inclusi&oacute;n</b>: pacientes con irregularidad del ritmo cardiaco y del pulso,  con d&eacute;ficit de pulso, con electrocardiograma, confirmatorio de fibrilaci&oacute;n  auricular.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>Criterios de  exclusi&oacute;n</b>: cuando no se pudieron obtener datos fiables.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>Muestreo</b>: no probabil&iacute;stico.</font></p>     ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>Reclutamiento</b>: se realiza en la secci&oacute;n  archivos del hospital; con la revisi&oacute;n de historias cl&iacute;nicas a trav&eacute;s del  autor.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>Variables</b>: se utilizaran variables  cualitativas nominales, y cuantitativa discreta; se presentan en frecuencia y  porcentaje, y en media ±DE.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>Instrumento  de medici&oacute;n</b>: elaboraci&oacute;n de una ficha t&eacute;cnica adecuada, para la recolecci&oacute;n de  datos de las historias cl&iacute;nicas revisadas, seg&uacute;n las variables utilizadas. </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>Gesti&oacute;n  de datos</b>: se utiliz&oacute; el programa estad&iacute;stico Epi Info7<sup>TM</sup>. El tama&ntilde;o  de poblaci&oacute;n disponible en el servicio es de 659 pacientes como universo y la  frecuencia esperada es 4,4%(15), el error alfa de 5%, efecto de dise&ntilde;o 1 y el  tama&ntilde;o m&iacute;nimo calculado fue de 59 sujetos. </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>Asuntos &eacute;ticos</b>: se respeta el derecho de  confidencialidad, justicia e igualdad de los individuos que participan del  estudio, no representa ning&uacute;n riesgo, y no causa da&ntilde;o o perjuicio a las  personas. Tiene como fin, el correcto abordaje para el buen tratamiento de la fibrilaci&oacute;n  auricular y contrarrestar las complicaciones con la prevenci&oacute;n. </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>RESULTADOS</b></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Fueron revisadas  59 historias  cl&iacute;nicas de pacientes internados; hombres y mujeres mayores de 40 a&ntilde;os; con un  rango de 40 a 97 a&ntilde;os y media de 67,5 ± 13 a&ntilde;os (<a href="#2a05t1">tabla 1</a>).</font></p>     <p align="center"><img src="../img/revistas/hn/v7n2/2a05t1.jpg"><a name="2a05t1"></a></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">La frecuencia de fibrilaci&oacute;n auricular fue 11,86% (<a href="#2a05t2">tabla 2</a>) con mayor predominio en sexo masculino (<a href="#2a05t3">tabla 3</a>). La franja etaria prevalente fue la mayor a 70 a&ntilde;os (<a href="#2a05t4">tabla 4</a>). </font></p>     <p align="center"><img src="../img/revistas/hn/v7n2/2a05t2.jpg"><a name="2a05t2"></a></p>     ]]></body>
<body><![CDATA[<p align="center"><img src="../img/revistas/hn/v7n2/2a05t3.jpg"><a name="2a05t3"></a></p>     <p align="center"><img src="../img/revistas/hn/v7n2/2a05t4.jpg"><a name="2a05t4"></a></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><B>DISCUSION</B></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Este  estudio determina una frecuencia de 11,86% de FA en pacientes internados, el  71% de los que la padecen, son mayores de 70 a&ntilde;os, coincidentes con dos  estudios a nivel regional, como el trabajo realizado en Chile que muestra una  tendencia que aparezca con mayor frecuencia hospitalizaciones por fibrilaci&oacute;n auricular  en mayores de 65 a&ntilde;os<sup>17</sup> y el estudio realizado en la Argentina donde  la edad media de los pacientes con fibrilaci&oacute;n  auricular es de 71 a&ntilde;os<sup>19</sup>,y con otro dato  epidemiol&oacute;gico donde la edad media de las personas  con fibrilaci&oacute;n auricular es de 75 a&ntilde;os<sup>25</sup>.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">En  este trabajo el sexo masculino es el m&aacute;s afectado representando el 85,71% de  los casos con fibrilaci&oacute;n  auricular, similar con un trabajo realizado en San Pablo,  Brasil, que evalu&oacute; a 1524 personas de ambos sexos durante 3 a&ntilde;os, siendo m&aacute;s  frecuente en varones con una prevalencia de 6,2% entre 75-79 a&ntilde;os y 7,9% en  mayores de 80 a&ntilde;os26, tambi&eacute;n similar a  los datos del estudio Framingham con la salvedad del tiempo de seguimiento de  38 a&ntilde;os, donde los varones tienen un riesgo 1,5 veces superior que las mujeres  de desarrollar una fibrilaci&oacute;n  auricular<sup>27</sup>.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Con  relaci&oacute;n a la hospitalizaci&oacute;n por fibrilaci&oacute;n  auricular hay que evaluarla en los a&ntilde;os posteriores a fin de  corroborar si existe un aumento de dichas internaciones, tal como lo afirma un  trabajo realizado en los Estados Unidos donde las hospitalizaciones con el  diagn&oacute;stico de fibrilaci&oacute;n  auricular pr&aacute;cticamente se duplico entre los a&ntilde;os 1985 y 1999<sup>28</sup>.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Como conclusi&oacute;n, la frecuencia de fibrilaci&oacute;n  auricular es de 11,86%; m&aacute;s frecuente en el sexo masculino  (85,71%) y la franja etaria m&aacute;s afecta es la de mayor a 70 a&ntilde;os.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>REFERENCIAS</b></font></p>      <!-- ref --><p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">1. Go AS, Hylek EM, Phillips KA, Chang Y, Henault LE, Selby JV, et al.  Prevalence of diagnosed atrial fibrillation in adults: national implications or  rhythm management and stroke prevention: the Anticoagulation and Risk Factors  in Atrial Fibrillation (ATRIA) Study. JAMA. 2001;285(18):2370-5.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=150108&pid=S2072-8174201500020000500001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     ]]></body>
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Circulation 2003 Aug 12;108(6):711-716.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=150157&pid=S2072-8174201500020000500028&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  <hr size "1" noshade>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><a href="#autor">1</a><a name="corres"></a>. M&eacute;dico Internista, Medico de Planta del Hospital  Regional Dr. Jos&eacute; A. Samudio. Instructor en las C&aacute;tedras de Semiolog&iacute;a M&eacute;dica y  Cl&iacute;nica M&eacute;dica, Facultad de Ciencias M&eacute;dicas, Universidad Nacional de Caaguaz&uacute;  (Coronel Oviedo, Paraguay)</font></p>     ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Correo electr&oacute;nico: <a href="mailto:marcial2ccgg@hotmail.com">marcial2ccgg@hotmail.com</a></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Art&iacute;culo recibido: 10 de febrero 2015. Art&iacute;culo  Aprobado: 22 de junio de 2015</font></p>     <p>&nbsp;</p>      ]]></body><back>
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