<?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>S1405-99402018000300007</article-id>
<article-id pub-id-type="doi">10.1016/j.acmx.2017.05.003</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Características electrocardiográficas de vías fascículo-ventriculares en pediatría: estudio comparativo con las vías accesorias anteroseptalesderechas]]></article-title>
<article-title xml:lang="en"><![CDATA[Electrocardiographic characteristics of fasciculo-ventricular accessory pathways in children: A comparative study with right anteroseptal accessory pathways]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Olmedo]]></surname>
<given-names><![CDATA[Julián Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Abello]]></surname>
<given-names><![CDATA[Mauricio Sebastián]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cannon]]></surname>
<given-names><![CDATA[Bryan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Doiny]]></surname>
<given-names><![CDATA[David]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bonacina]]></surname>
<given-names><![CDATA[Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moltedo]]></surname>
<given-names><![CDATA[José Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto FLENI Departamento de Cardiología Servicio de Electrofisiología]]></institution>
<addr-line><![CDATA[ Buenos Aires]]></addr-line>
<country>Notnormalized</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Mayo Clinic Departamento de enfermedades cardiovasculares pediátricas y adolescentes ]]></institution>
<addr-line><![CDATA[Minneapolis Minnesota]]></addr-line>
<country>USA</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2018</year>
</pub-date>
<volume>88</volume>
<numero>3</numero>
<fpage>212</fpage>
<lpage>218</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-99402018000300007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-99402018000300007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-99402018000300007&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivos:  Las vías accesorias (VAc) fascículo-ventriculares (FV) tienen una localización anatómica similar a las VAcanteroseptales derechas (ASD) y comparten características electrocardiográficas. El objetivo es comparar características electrocardiográficas de las VAC FV con las de las ASD en pediatría.  Métodos:  Se incluyeron pacientes con preexcitación manifiesta sometidos a estudio electrofisiológico. Las VAc FV se definieron por un intervalo HV &#8804; 32ms y un alargamiento del AH sin modificación del HV, del grado o patrón de preexcitación ventricular durante la estimulación auricular. Tres observadores independientes y ciegos analizaron los ECG en cada grupo.  Resultados:  De 288 pacientes, 15 (5.2%) presentaban VAC FV y 14 VAC ASD (4.9%). El intervalo PR fue más largo en las VAc FV que en las ASD (113 ± 21 vs. 86 ± 13 ms respectivamente; p = &lt; 0.001) y la duración del QRS fue menor (95 ± 12 vs. 137 ± 24 ms respectivamente; p = &lt; 0.001). El ECG de las VAc FV presentó una deflexión rápida de baja amplitud previa al inicio del QRS en 13 de 15 pacientes (87%) y en 2 con VAc AV ASD (14%); (p = 0.003).  Conclusiones:  El intervalo PR fue más largo y el complejo QRS más angosto en la VAC FV respecto de las ASD. La presencia de una deflexión rápida de baja amplitud previa al inicio del QRS permitiría diferenciarlas de las aurículo-ventriculares ASD de manera no invasiva.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Objectives: Fasciculo-ventricular (FV) accessory pathways (AP&#8217;s) and right anteroseptal (RAS) AP&#8217;s share similar anatomic locations and electrocardiographic characteristics. The objective of this article is to compare these features in children.  Methods:  All patients with manifest pre-excitation who underwent an electrophysiological study were included. Fasciculo-ventricular AP&#8217;s were defined by the presence of an HV inter- val &#8804; 32 ms and a prolongation of the AH without changes in the HV interval, or the level of pre-excitation during atrial pacing. Three independent and blind observers analysed the ECG&#8217;s in both groups.  Results:  Out of 288 patients, 15 (5.2%) had FV AP&#8217;s and 14 (4.9%) right AS AP&#8217;s. The PR interval was longer in FV AP&#8217;s than in RAS (113 ± 21 vs 86 ± 13 ms respectively; P &lt; .001) and the QRS was narrower (95 ± 12 vs 137 ± 24 ms respectively; P &lt; .001). The ECG in patients with FV AP&#8217;s showed a rapid low amplitude deflection at the begining of the QRS in 13 out of 15 patients (87%) and in 2 (14%) the RAS AP group (P = .003).  Conclusions:  The PR interval was longer and the QRS complex was narrower in patients with FV AP&#8217;s. The presence of a rapid low amplitude deflection at the beginning of the QRS complex would allow to differentiate them from RAS AP&#8217;s non-invasively.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Vías accesorias fascículoventriculares]]></kwd>
<kwd lng="es"><![CDATA[Síndrome de WPW]]></kwd>
<kwd lng="es"><![CDATA[Pediatría]]></kwd>
<kwd lng="es"><![CDATA[Argentina]]></kwd>
<kwd lng="en"><![CDATA[Fasciculo-ventricular accessory pathways]]></kwd>
<kwd lng="en"><![CDATA[WPW syndrome]]></kwd>
<kwd lng="en"><![CDATA[Children]]></kwd>
<kwd lng="en"><![CDATA[Argentina]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sallee]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[HareGF]]></surname>
<given-names><![CDATA[van]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Preexcitation secondary to fasciculo-ventricular pathways in children: A report of three cases.]]></article-title>
<source><![CDATA[J. CardiovascElectrophysiol.]]></source>
<year>1999</year>
<volume>10</volume>
<page-range>36-42.</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sternick]]></surname>
<given-names><![CDATA[EB]]></given-names>
</name>
<name>
<surname><![CDATA[Gerken]]></surname>
<given-names><![CDATA[LM]]></given-names>
</name>
<name>
<surname><![CDATA[Vrandecic]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Fasciculoventricular pathways: Clinical and electrophysiologic characteristics of a variant of preexcitation. J]]></article-title>
<source><![CDATA[CardiovascElectrophysiol]]></source>
<year>2003</year>
<volume>14</volume>
<page-range>1057-63</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ratnasamy]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Khan]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Wolff]]></surname>
<given-names><![CDATA[GS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Clinical and electrophysiological characteristics of fasciculoventricular fibers in children]]></article-title>
<source><![CDATA[Int J Cardiol]]></source>
<year>2008</year>
<volume>123</volume>
<page-range>257-62.</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sternick]]></surname>
<given-names><![CDATA[EB]]></given-names>
</name>
<name>
<surname><![CDATA[Oliva]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Gerken]]></surname>
<given-names><![CDATA[ML]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Clinical, electrocardiographic, and electrophysiologic characteristics of patients with a fasciculoventricular pathway: The role of PRKAG2 mutation]]></article-title>
<source><![CDATA[HeartRhythm]]></source>
<year>2011</year>
<volume>8</volume>
<page-range>58-64</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Govindan]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Ward]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Behr]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A rare conection: Fasciculoventricular pathway in PRKAG2 disease]]></article-title>
<source><![CDATA[J CardiovascElectrophysiol]]></source>
<year>2010</year>
<volume>21</volume>
<page-range>329-32</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6.</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Josephson]]></surname>
<given-names><![CDATA[ME]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Preexcitationsyndromes]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Josephson]]></surname>
<given-names><![CDATA[ME]]></given-names>
</name>
</person-group>
<source><![CDATA[Clinical cardiac electrophysiology: Techinques and intepretations]]></source>
<year>2008</year>
<volume>4th</volume>
<page-range>440-2</page-range><publisher-loc><![CDATA[Philadelphia ]]></publisher-loc>
<publisher-name><![CDATA[Lippicott Williams &amp; Wilkin]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B7">
<label>7.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ho]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Choi]]></surname>
<given-names><![CDATA[YS]]></given-names>
</name>
<name>
<surname><![CDATA[Choi]]></surname>
<given-names><![CDATA[EK]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Electrocardiographic characteristics of fasciculoventricularpathways]]></article-title>
<source><![CDATA[PACE]]></source>
<year>2005</year>
<volume>28</volume>
<page-range>25-8</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sternick]]></surname>
<given-names><![CDATA[EB]]></given-names>
</name>
<name>
<surname><![CDATA[Rodriguez]]></surname>
<given-names><![CDATA[LM]]></given-names>
</name>
<name>
<surname><![CDATA[Gerken]]></surname>
<given-names><![CDATA[LM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Electrocardiogram in patient whit fasciculoventricular pathway: A comparative study whit anteroseptal and midseptal accessory pathway]]></article-title>
<source><![CDATA[Heart Rhythm]]></source>
<year>2005</year>
<volume>2</volume>
<page-range>1-6</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cao]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Zou]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Narrow QRS tachycardia with ven- triculoatrial dissociation mediated by a left fasciculoventricularfiber]]></article-title>
<source><![CDATA[J Interv Card Electrophysiol]]></source>
<year>2005</year>
<volume>13</volume>
<page-range>151-7</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gillette]]></surname>
<given-names><![CDATA[PC]]></given-names>
</name>
<name>
<surname><![CDATA[Reitman]]></surname>
<given-names><![CDATA[MJ]]></given-names>
</name>
<name>
<surname><![CDATA[Gutgesell]]></surname>
<given-names><![CDATA[HP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Intracardiacelectrography in children and young adults]]></article-title>
<source><![CDATA[Am Heart J]]></source>
<year>1975</year>
<volume>89</volume>
<page-range>36-44</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Colavita]]></surname>
<given-names><![CDATA[PG]]></given-names>
</name>
<name>
<surname><![CDATA[Packer]]></surname>
<given-names><![CDATA[DL]]></given-names>
</name>
<name>
<surname><![CDATA[Presselly]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Frequency, diagnosis and clinical characteristics of patients with multiple accessory atrioventricularpathways]]></article-title>
<source><![CDATA[Am J Cardiol]]></source>
<year>1987</year>
<volume>59</volume>
<page-range>601-6</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Weng]]></surname>
<given-names><![CDATA[KP]]></given-names>
</name>
<name>
<surname><![CDATA[Wolff]]></surname>
<given-names><![CDATA[GS]]></given-names>
</name>
<name>
<surname><![CDATA[Young]]></surname>
<given-names><![CDATA[ML]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Multiple accessory pathway in pediatric patients with Wolff-Parkinson-White syndrome]]></article-title>
<source><![CDATA[Am J Cardiol]]></source>
<year>2003</year>
<volume>91</volume>
<page-range>1178-83</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vashist]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[JN]]></given-names>
</name>
<name>
<surname><![CDATA[van Hare]]></surname>
<given-names><![CDATA[GF]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Unusually high association of hypertrophic cardiomyopathy and complex heart defects in children with fasciculoventricularpathways]]></article-title>
<source><![CDATA[PACE]]></source>
<year>2012</year>
<volume>35</volume>
<page-range>308-13</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
