<?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>1405-9940</journal-id>
<journal-title><![CDATA[Archivos de cardiología de México]]></journal-title>
<abbrev-journal-title><![CDATA[Arch. Cardiol. Méx.]]></abbrev-journal-title>
<issn>1405-9940</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Cardiología Ignacio Chávez]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-99402018000500468</article-id>
<article-id pub-id-type="doi">10.1016/j.acmx.2018.05.004</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efecto agudo del consumo de yerba mate (Ilex paraguariensis) sobre el ritmo cardíaco en pacientes derivados para estudio Holter]]></article-title>
<article-title xml:lang="en"><![CDATA[Acute effect of yerba mate (Ilex paraguariensis) consumption on heart rhythm in patients referred for Holter study]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cuesta]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guigou]]></surname>
<given-names><![CDATA[Carina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Varela]]></surname>
<given-names><![CDATA[Analía]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ferrero]]></surname>
<given-names><![CDATA[Lorena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Charlin]]></surname>
<given-names><![CDATA[María Clara]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lluberas]]></surname>
<given-names><![CDATA[Ricardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de la República Facultad de Medicina ]]></institution>
<addr-line><![CDATA[Montevideo ]]></addr-line>
<country>Uruguay</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Central de las Fuerzas Armadas, Servicio de Cardiología ]]></institution>
<addr-line><![CDATA[Montevideo ]]></addr-line>
<country>Uruguay</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<volume>88</volume>
<numero>5</numero>
<fpage>468</fpage>
<lpage>473</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-99402018000500468&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-99402018000500468&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-99402018000500468&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción:  El consumo de yerba mate (YM) (Ilex paraguariensis) es común en Sudamérica y se extiende a todo el mundo. Contiene muchas sustancias bioactivas que pueden ser beneficiosas. También existe la opinión de que puede tener efectos nocivos sobre el ritmo cardíaco, pero no encontramos investigaciones al respecto.  Objetivo:  Nuestro objetivo fue evaluar el efecto agudo de YM sobre el ritmo, en pacientes enviados para realizar un Holter.  Método:  Realizamos un estudio clínico seudoexperimental, de tipo antes y después. Tomamos 50 pacientes consumidores habituales de YM y se les realizó un Holter tomando YM y otro luego de 24 sin consumir. También se controló el uso de otros productos que pudieran interferir.  Resultados:  El 52% fueron mujeres y la edad, de 55 ± 15 años. El 78% tenía al menos un factor de riesgo vascular, el 44% cardiopatía estructural y el 90% tomaba medicación cardiovascular. La frecuencia cardíaca (FC) con y sin YM fue similar. Solo la FC mínima horaria fue menor tomando YM (61 ± 10 vs. 63 ± 9, p = 0.021). No hubo diferencia significativa en la incidencia de arritmias sostenidas, no sostenidas ni en la extrasistolia ventricular. El total de extrasístoles supraventriculares fue mayor sin YM (952 ± 3,538 vs. 1,294 ± 5,201, p = 0.014) y la cantidad máxima horaria también (86 ± 302 vs. 107 ± 360, p = 0.032). No hubo diferencia en la variabilidad de la FC.  Conclusiones:  En pacientes cardiológicos tomadores de YM, su consumo de la forma habitual no se asoció con cambios importantes de la FC ni con un aumento en la incidencia de arritmias. Hubo menos actividad ectópica supraventricular.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction:  The consumption of yerba mate (YM) (Ilex paraguariensis) is common in South America and is now used all over the world. It contains many bioactive substances that can be beneficial. There is also the opinion that it may have harmful effects on heart rhythm, but no studies have been found on this.  Objective:  The aim of this study was to evaluate the acute effect of YM on heart rhythm in patients referred for a Holter study.  Method:  A before and after pseudo-experimental clinical study was conducted by performing a Holter on 50 habitual users of YM, and another one after 24 without YM consumption. The use of other products that could interfere was also controlled.  Results:  The mean age of the subjects was 55 ± 15 years, and 52% were women. At least one vascular risk factor was found in 78%, with 44% structural heart disease, and 90% taking cardio- vascular medication. The heart rate (HR) with and without YM was similar. Only the minimum hourly HR was lower when taking YM (61 ± 10 vs. 63 ± 9, P = .021). There was no significant diffe- rence in the incidence of sustained or non-sustained arrhythmias, or in ventricular extrasystoles. The total number of supra-ventricular premature beats was higher without YM (952 ± 3,538 vs. 1,294 ± 5,201, P = .014) and also the maximum hourly (86 ± 302 vs. 107 ± 360, P = .032). There was no difference in HR variability.  Conclusions:  In cardiology patients, usual users of YM, habitual consumption was not associated with significant changes in HR or an increase in the incidence of arrhythmias. There was less ectopic supraventricular activity.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Ilex paraguariensis]]></kwd>
<kwd lng="es"><![CDATA[Yerba mate]]></kwd>
<kwd lng="es"><![CDATA[Arritmias]]></kwd>
<kwd lng="es"><![CDATA[Extrasístoles supraventriculares]]></kwd>
<kwd lng="es"><![CDATA[Uruguay]]></kwd>
<kwd lng="en"><![CDATA[Ilex paraguariensis]]></kwd>
<kwd lng="en"><![CDATA[Yerba mate]]></kwd>
<kwd lng="en"><![CDATA[Arrhythmias]]></kwd>
<kwd lng="en"><![CDATA[Supraventricular extrasystoles]]></kwd>
<kwd lng="en"><![CDATA[Uruguay]]></kwd>
</kwd-group>
</article-meta>
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