<?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>S1405-99402022000200242</article-id>
<article-id pub-id-type="doi">10.24875/acm.20000473</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Variabilidad del ritmo cardíaco en pediatría: aspectos metodológicos y aplicaciones clínicas]]></article-title>
<article-title xml:lang="en"><![CDATA[Heart rate variability in children: methodological issues and clinical applications]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Núñez]]></surname>
<given-names><![CDATA[Iván]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Romero]]></surname>
<given-names><![CDATA[Natalia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Álvarez]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zambrano]]></surname>
<given-names><![CDATA[Lysien]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Veiga]]></surname>
<given-names><![CDATA[Glaucia Luciano da]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Romero]]></surname>
<given-names><![CDATA[Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Concepción Facultad de Medicina Departamento de Kinesiología]]></institution>
<addr-line><![CDATA[Concepción ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Dr. Guillermo Grant Benavente Unidad de Cardiología Servicio de Pediatría]]></institution>
<addr-line><![CDATA[Concepción ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de Honduras Facultad de Ciencias Médicas Departamento de Fisiología y Ciencias Morfológicas]]></institution>
<addr-line><![CDATA[Tegucigalpa ]]></addr-line>
<country>Honduras</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Centro Universitário Saúde ABC Laboratório de Análise Clinico ]]></institution>
<addr-line><![CDATA[Santo André ]]></addr-line>
<country>Brasil</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad de La Frontera Facultad de Medicina Programa de Doctorado en Ciencias Médicas]]></institution>
<addr-line><![CDATA[Temuco ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Fundación Kinesiología, Ciencia y Sociedad  ]]></institution>
<addr-line><![CDATA[Temuco ]]></addr-line>
<country>Chile</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<volume>92</volume>
<numero>2</numero>
<fpage>242</fpage>
<lpage>252</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-99402022000200242&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-99402022000200242&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-99402022000200242&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La variabilidad del ritmo cardíaco (VRC) corresponde a las variaciones temporales de la frecuencia cardíaca o del intervalo latido-latido. Este parámetro refleja el estado de los mecanismos autonómicos de control cardiovascular. Los cambios propios del ciclo vital de las personas, el sedentarismo y diversos procesos de enfermedad han mostrado inducir cambios en la VRC y desplazar el balance autonómico hacia una mayor influencia simpática o parasimpática sobre el corazón. Estos antecedentes apoyan el uso de los índices de VRC para el diagnóstico y seguimiento de diversas entidades nosológicas en el adulto. Sin embargo, en la población pediátrica ha existido un limitado avance en el estudio de las variaciones temporales del ritmo cardíaco. Este artículo tiene por objetivo describir los aspectos fisiológicos y técnicos de la VRC en población pediátrica. El propósito es aportar antecedentes que permitan optimizar la aplicación de estos parámetros en este grupo etario.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Heart rate variability (HRV) corresponds to variations in heart rate or beat-beat time interval. This parameter reflects the status of the autonomic mechanisms of cardiovascular control, which may be influenced by changes characteristic of the life cycle of people, sedentary lifestyle, and various disease processes that directly or indirectly generate changes in the HRV and shift the autonomic balance, either towards greater sympathetic or parasympathetic influence on the heart. These antecedents support the use of HRV indices for the diagnosis and monitoring of various nosological entities in adults. However, there has been limited progress in the study of temporal variations in heart rhythm in the pediatric population. This article aims to describe the physiological and technical aspects of HRV in the pediatric population to provide a background that allows optimizing the application of these parameters in this age group.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Variabilidad del ritmo cardíaco]]></kwd>
<kwd lng="es"><![CDATA[Análisis espectral]]></kwd>
<kwd lng="es"><![CDATA[Sistema nervioso autónomo]]></kwd>
<kwd lng="es"><![CDATA[Niños]]></kwd>
<kwd lng="en"><![CDATA[Heart rate variability]]></kwd>
<kwd lng="en"><![CDATA[Spectral analysis]]></kwd>
<kwd lng="en"><![CDATA[Autonomic nervous system]]></kwd>
<kwd lng="en"><![CDATA[Children]]></kwd>
</kwd-group>
</article-meta>
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