Electrophysiological Features of Orthodromic Atrioventricular Reentry Tachycardia in Patients with Wolff‐Parkinson‐White Syndrome and Atrial Fibrillation
Identifieur interne : 000143 ( Main/Corpus ); précédent : 000142; suivant : 000144Electrophysiological Features of Orthodromic Atrioventricular Reentry Tachycardia in Patients with Wolff‐Parkinson‐White Syndrome and Atrial Fibrillation
Auteurs : Zbigniew Kalarus ; Oskar Kowalski ; Radosław Lenarczyk ; Janusz Prokopczuk ; Stanisław PasykSource :
- Pacing and Clinical Electrophysiology [ 0147-8389 ] ; 2003-07.
English descriptors
Abstract
The aim of this study was to compare the electrophysiological features of tachycardia between WPW patients with and without AF. The study population consisted of 114 patients with WPW syndrome and reciprocating tachycardia during electrophysiological study. Two groups were selected: group I with AF during the procedure (n = 42) and the control group n = 72 without AF (group II). Cycle length (V‐V interval), antero A‐V, retrograde V‐A conduction time during tachycardia and indexes V‐A/V‐V were analyzed. In addition, the relation between antero‐, retrograde conduction time, and V‐V was evaluated. Selection of the most predictive factor for AF presence was performed using regression analysis. Significant differences between the two groups were observed. These included a higher rate of tachycardia, shorter anterograde conduction time, A‐V/V‐V‐indexes, longer retrograde conduction time, and V‐A/V‐V‐indexes in group I compared with group II. Significant, positive correlations between anterograde conduction time and V‐V were present in both groups, but retrograde conduction correlated significantly with the V‐V‐interval only in group II and group I (r = 0.37 vs r =−0.01, respectively). Significant, negative correlations between A‐V and V‐A conduction time in all analyzed points has been found to exist in group I (r =−0.45 for the point of maximal preexcitation [PMP]), whereas there were no significant correlations between these parameters in group II (r = 0.04). The most powerful AF predictor has been identified as the V‐A/V‐V index. The presence of AF in WPW syndrome may be associated with discrete patient characteristics. Ventricular activation occurs earlier, and atrial later, in the tachycardia cycle in AF than in patients free of AF. The different ability of the accessory pathway for adaptation to tachycardia rate changes in group I causes prolonged retrograde conduction over the pathway while the tachycardia rate increases. (PACE 2003; 26[Pt. I]:1479–1488)
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DOI: 10.1046/j.1460-9592.2003.t01-1-00214.x
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<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Electrophysiological Features of Orthodromic Atrioventricular Reentry Tachycardia in Patients with Wolff‐Parkinson‐White Syndrome and Atrial Fibrillation</title><author><name sortKey="Kalarus, Zbigniew" sort="Kalarus, Zbigniew" uniqKey="Kalarus Z" first="Zbigniew" last="Kalarus">Zbigniew Kalarus</name><affiliation><mods:affiliation>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</mods:affiliation></affiliation></author><author><name sortKey="Kowalski, Oskar" sort="Kowalski, Oskar" uniqKey="Kowalski O" first="Oskar" last="Kowalski">Oskar Kowalski</name><affiliation><mods:affiliation>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</mods:affiliation></affiliation></author><author><name sortKey="Lenarczyk, Radoslaw" sort="Lenarczyk, Radoslaw" uniqKey="Lenarczyk R" first="Radosław" last="Lenarczyk">Radosław Lenarczyk</name><affiliation><mods:affiliation>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</mods:affiliation></affiliation></author><author><name sortKey="Prokopczuk, Janusz" sort="Prokopczuk, Janusz" uniqKey="Prokopczuk J" first="Janusz" last="Prokopczuk">Janusz Prokopczuk</name><affiliation><mods:affiliation>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</mods:affiliation></affiliation></author><author><name sortKey="Pasyk, Stanislaw" sort="Pasyk, Stanislaw" uniqKey="Pasyk S" first="Stanisław" last="Pasyk">Stanisław Pasyk</name><affiliation><mods:affiliation>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno 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last="Kowalski">Oskar Kowalski</name><affiliation><mods:affiliation>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</mods:affiliation></affiliation></author><author><name sortKey="Lenarczyk, Radoslaw" sort="Lenarczyk, Radoslaw" uniqKey="Lenarczyk R" first="Radosław" last="Lenarczyk">Radosław Lenarczyk</name><affiliation><mods:affiliation>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</mods:affiliation></affiliation></author><author><name sortKey="Prokopczuk, Janusz" sort="Prokopczuk, Janusz" uniqKey="Prokopczuk J" first="Janusz" last="Prokopczuk">Janusz Prokopczuk</name><affiliation><mods:affiliation>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</mods:affiliation></affiliation></author><author><name sortKey="Pasyk, Stanislaw" sort="Pasyk, Stanislaw" uniqKey="Pasyk S" first="Stanisław" last="Pasyk">Stanisław Pasyk</name><affiliation><mods:affiliation>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Pacing and Clinical Electrophysiology</title><idno type="ISSN">0147-8389</idno><idno type="eISSN">1540-8159</idno><imprint><publisher>Blackwell Futura Publishing, Inc.</publisher><pubPlace>350 Main Street , Malden , MA 02148‐5018 , USA , and 9600 Garsington Road , Oxford OX4 2DQ , UK .</pubPlace><date type="published" when="2003-07">2003-07</date><biblScope unit="volume">26</biblScope><biblScope unit="issue">7p1</biblScope><biblScope unit="page" from="1479">1479</biblScope><biblScope unit="page" to="1488">1488</biblScope></imprint><idno type="ISSN">0147-8389</idno></series><idno type="istex">F20C8F306FBD0581265408381CDB4F233C9606CD</idno><idno type="DOI">10.1046/j.1460-9592.2003.t01-1-00214.x</idno><idno type="ArticleID">PACE214</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0147-8389</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>WPW syndrome</term><term>accessory pathway</term><term>atrial fibrillation</term><term>atrioventricular reentry tachycardia</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The aim of this study was to compare the electrophysiological features of tachycardia between WPW patients with and without AF. The study population consisted of 114 patients with WPW syndrome and reciprocating tachycardia during electrophysiological study. Two groups were selected: group I with AF during the procedure (n = 42) and the control group n = 72 without AF (group II). Cycle length (V‐V interval), antero A‐V, retrograde V‐A conduction time during tachycardia and indexes V‐A/V‐V were analyzed. In addition, the relation between antero‐, retrograde conduction time, and V‐V was evaluated. Selection of the most predictive factor for AF presence was performed using regression analysis. Significant differences between the two groups were observed. These included a higher rate of tachycardia, shorter anterograde conduction time, A‐V/V‐V‐indexes, longer retrograde conduction time, and V‐A/V‐V‐indexes in group I compared with group II. Significant, positive correlations between anterograde conduction time and V‐V were present in both groups, but retrograde conduction correlated significantly with the V‐V‐interval only in group II and group I (r = 0.37 vs r =−0.01, respectively). Significant, negative correlations between A‐V and V‐A conduction time in all analyzed points has been found to exist in group I (r =−0.45 for the point of maximal preexcitation [PMP]), whereas there were no significant correlations between these parameters in group II (r = 0.04). The most powerful AF predictor has been identified as the V‐A/V‐V index. The presence of AF in WPW syndrome may be associated with discrete patient characteristics. Ventricular activation occurs earlier, and atrial later, in the tachycardia cycle in AF than in patients free of AF. The different ability of the accessory pathway for adaptation to tachycardia rate changes in group I causes prolonged retrograde conduction over the pathway while the tachycardia rate increases. (PACE 2003; 26[Pt. I]:1479–1488)</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>ZBIGNIEW KALARUS</name><affiliations><json:string>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</json:string></affiliations></json:item><json:item><name>OSKAR KOWALSKI</name><affiliations><json:string>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</json:string></affiliations></json:item><json:item><name>RADOSŁAW LENARCZYK</name><affiliations><json:string>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</json:string></affiliations></json:item><json:item><name>JANUSZ PROKOPCZUK</name><affiliations><json:string>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</json:string></affiliations></json:item><json:item><name>STANISŁAW PASYK</name><affiliations><json:string>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>WPW syndrome</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>atrial fibrillation</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>accessory pathway</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>atrioventricular reentry tachycardia</value></json:item></subject><articleId><json:string>PACE214</json:string></articleId><language><json:string>eng</json:string></language><abstract>The aim of this study was to compare the electrophysiological features of tachycardia between WPW patients with and without AF. The study population consisted of 114 patients with WPW syndrome and reciprocating tachycardia during electrophysiological study. Two groups were selected: group I with AF during the procedure (n = 42) and the control group n = 72 without AF (group II). Cycle length (V‐V interval), antero A‐V, retrograde V‐A conduction time during tachycardia and indexes V‐A/V‐V were analyzed. In addition, the relation between antero‐, retrograde conduction time, and V‐V was evaluated. Selection of the most predictive factor for AF presence was performed using regression analysis. Significant differences between the two groups were observed. These included a higher rate of tachycardia, shorter anterograde conduction time, A‐V/V‐V‐indexes, longer retrograde conduction time, and V‐A/V‐V‐indexes in group I compared with group II. Significant, positive correlations between anterograde conduction time and V‐V were present in both groups, but retrograde conduction correlated significantly with the V‐V‐interval only in group II and group I (r = 0.37 vs r =−0.01, respectively). Significant, negative correlations between A‐V and V‐A conduction time in all analyzed points has been found to exist in group I (r =−0.45 for the point of maximal preexcitation [PMP]), whereas there were no significant correlations between these parameters in group II (r = 0.04). The most powerful AF predictor has been identified as the V‐A/V‐V index. The presence of AF in WPW syndrome may be associated with discrete patient characteristics. Ventricular activation occurs earlier, and atrial later, in the tachycardia cycle in AF than in patients free of AF. The different ability of the accessory pathway for adaptation to tachycardia rate changes in group I causes prolonged retrograde conduction over the pathway while the tachycardia rate increases. (PACE 2003; 26[Pt. 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The study population consisted of 114 patients with WPW syndrome and reciprocating tachycardia during electrophysiological study. Two groups were selected: group I with AF during the procedure (n = 42) and the control group n = 72 without AF (group II). Cycle length (V‐V interval), antero A‐V, retrograde V‐A conduction time during tachycardia and indexes V‐A/V‐V were analyzed. In addition, the relation between antero‐, retrograde conduction time, and V‐V was evaluated. Selection of the most predictive factor for AF presence was performed using regression analysis. Significant differences between the two groups were observed. These included a higher rate of tachycardia, shorter anterograde conduction time, A‐V/V‐V‐indexes, longer retrograde conduction time, and V‐A/V‐V‐indexes in group I compared with group II. Significant, positive correlations between anterograde conduction time and V‐V were present in both groups, but retrograde conduction correlated significantly with the V‐V‐interval only in group II and group I (r = 0.37 vs r =−0.01, respectively). Significant, negative correlations between A‐V and V‐A conduction time in all analyzed points has been found to exist in group I (r =−0.45 for the point of maximal preexcitation [PMP]), whereas there were no significant correlations between these parameters in group II (r = 0.04). The most powerful AF predictor has been identified as the V‐A/V‐V index. The presence of AF in WPW syndrome may be associated with discrete patient characteristics. Ventricular activation occurs earlier, and atrial later, in the tachycardia cycle in AF than in patients free of AF. The different ability of the accessory pathway for adaptation to tachycardia rate changes in group I causes prolonged retrograde conduction over the pathway while the tachycardia rate increases. (PACE 2003; 26[Pt. I]:1479–1488)</p></abstract><textClass xml:lang="en"><keywords scheme="keyword"><list><head>Keywords</head><item><term>WPW syndrome</term></item><item><term>atrial fibrillation</term></item><item><term>accessory pathway</term></item><item><term>atrioventricular reentry tachycardia</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="2003-07">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><original>false</original><mimetype>text/plain</mimetype><extension>txt</extension><uri>https://api.istex.fr/document/F20C8F306FBD0581265408381CDB4F233C9606CD/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en"><header><publicationMeta level="product"><publisherInfo><publisherName>Blackwell Futura Publishing, Inc.</publisherName><publisherLoc> 350 Main Street , Malden , MA 02148‐5018 , USA , and 9600 Garsington Road , Oxford OX4 2DQ , UK . </publisherLoc></publisherInfo><doi origin="wiley" registered="yes">10.1111/(ISSN)1540-8159</doi><issn type="print">0147-8389</issn><issn type="electronic">1540-8159</issn><idGroup><id type="product" value="PACE"></id><id type="publisherDivision" value="ST"></id></idGroup><titleGroup><title type="main" sort="PACING CLINICAL ELECTROPHYSIOLOGY">Pacing and Clinical Electrophysiology</title></titleGroup></publicationMeta><publicationMeta level="part" position="07000"><doi origin="wiley">10.1111/pace.2003.26.issue-7p1</doi><numberingGroup><numbering type="journalVolume" number="26">26</numbering><numbering type="journalIssue">7p1</numbering></numberingGroup><coverDate startDate="2003-07">July 2003</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="9" status="forIssue"><doi origin="wiley">10.1046/j.1460-9592.2003.t01-1-00214.x</doi><idGroup><id type="unit" value="PACE214"></id><id type="supplier" value="pace214"></id></idGroup><countGroup><count type="pageTotal" number="10"></count></countGroup><titleGroup><title type="tocHeading1"><i>ORIGINAL ARTICLES</i></title></titleGroup><eventGroup><event type="firstOnline" date="2003-06-30"></event><event type="publishedOnlineFinalForm" date="2003-06-30"></event><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.3.5 mode:FullText source:FullText result:FullText" date="2010-04-06"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-02-06"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-11-03"></event></eventGroup><numberingGroup><numbering type="pageFirst" number="1479">1479</numbering><numbering type="pageLast" number="1488">1488</numbering></numberingGroup><correspondenceTo>Address for reprints: Zbigniew Kalarus, M.D., I Katedra I Oddział Kliniczny Kardiologii Śla̧skiej Akademii Medycznej, Śla̧skie Centrum Chorób Serca, ul.Szpitalna 2, 41‐800 Zabrze, Poland Fax: +48‐322717692; e‐mail: <email>karzab@infomed.slam.katowice.pl</email></correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:PACE.PACE214.pdf"></link></linkGroup></publicationMeta><contentMeta><countGroup><count type="figureTotal" number="3"></count><count type="tableTotal" number="6"></count><count type="formulaTotal" number="37"></count><count type="referenceTotal" number="23"></count><count type="linksCrossRef" number="33"></count></countGroup><titleGroup><title type="main">Electrophysiological Features of Orthodromic Atrioventricular Reentry Tachycardia in Patients with Wolff‐Parkinson‐White Syndrome and Atrial Fibrillation</title><title type="shortAuthors">KALARUS, ET AL.</title><title type="short">AF IN WPW PATIENTS</title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1"><personName><givenNames>ZBIGNIEW</givenNames><familyName>KALARUS</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a1"><personName><givenNames>OSKAR</givenNames><familyName>KOWALSKI</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a1"><personName><givenNames>RADOSŁAW</givenNames><familyName>LENARCZYK</familyName></personName></creator><creator creatorRole="author" xml:id="cr4" affiliationRef="#a1"><personName><givenNames>JANUSZ</givenNames><familyName>PROKOPCZUK</familyName></personName></creator><creator creatorRole="author" xml:id="cr5" affiliationRef="#a1"><personName><givenNames>STANISŁAW</givenNames><familyName>PASYK</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1" countryCode="PL"><unparsedAffiliation>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en"><keyword xml:id="k1"><i>WPW syndrome</i></keyword><keyword xml:id="k2"><i>atrial fibrillation</i></keyword><keyword xml:id="k3"><i>accessory pathway</i></keyword><keyword xml:id="k4"><i>atrioventricular reentry tachycardia</i></keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><!-- KALARUS, Z., et al .: Electrophysiological Features of Orthodromic Atrioventricular Reentry Tachycardia in Patients with Wolff-Parkinson-White Syndrome and Atrial Fibrillation. --><p> <i>The aim of this study was to compare the electrophysiological features of tachycardia between WPW patients with and without AF. The study population consisted of 114 patients with WPW syndrome and reciprocating tachycardia during electrophysiological study. Two groups were selected: group I with AF during the procedure</i><span type="mathematics"><i>(n = 42)</i></span><i>and the control group</i><span type="mathematics"><i>n = 72</i></span><i>without AF (group II). Cycle length (V‐V interval), antero A‐V, retrograde V‐A conduction time during tachycardia and indexes V‐A/V‐V were analyzed. In addition, the relation between antero‐, retrograde conduction time, and V‐V was evaluated. Selection of the most predictive factor for AF presence was performed using regression analysis. Significant differences between the two groups were observed. These included a higher rate of tachycardia, shorter anterograde conduction time, A‐V/V‐V‐indexes, longer retrograde conduction time, and V‐A/V‐V‐indexes in group I compared with group II. Significant, positive correlations between anterograde conduction time and V‐V were present in both groups, but retrograde conduction correlated significantly with the V‐V‐interval only in group II and group I (r = 0.37 vs r =−0.01, respectively). Significant, negative correlations between A‐V and V‐A conduction time in all analyzed points has been found to exist in group I (r =−0.45 for the point of maximal preexcitation [PMP]), whereas there were no significant correlations between these parameters in group II (r = 0.04). The most powerful AF predictor has been identified as the V‐A/V‐V index. The presence of AF in WPW syndrome may be associated with discrete patient characteristics. Ventricular activation occurs earlier, and atrial later, in the tachycardia cycle in AF than in patients free of AF. The different ability of the accessory pathway for adaptation to tachycardia rate changes in group I causes prolonged retrograde conduction over the pathway while the tachycardia rate increases. (PACE 2003; 26[Pt. I]:1479–1488)</i> </p></abstract></abstractGroup></contentMeta><noteGroup><note xml:id="n-fnt-1" numbered="no"><p>Received October 16, 2001; revised July 2, 2002; accepted October 3, 2002.</p></note></noteGroup></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Electrophysiological Features of Orthodromic Atrioventricular Reentry Tachycardia in Patients with Wolff‐Parkinson‐White Syndrome and Atrial Fibrillation</title></titleInfo><titleInfo type="abbreviated"><title>AF IN WPW PATIENTS</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Electrophysiological Features of Orthodromic Atrioventricular Reentry Tachycardia in Patients with Wolff‐Parkinson‐White Syndrome and Atrial Fibrillation</title></titleInfo><name type="personal"><namePart type="given">ZBIGNIEW</namePart><namePart type="family">KALARUS</namePart><affiliation>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">OSKAR</namePart><namePart type="family">KOWALSKI</namePart><affiliation>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">RADOSŁAW</namePart><namePart type="family">LENARCZYK</namePart><affiliation>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">JANUSZ</namePart><namePart type="family">PROKOPCZUK</namePart><affiliation>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">STANISŁAW</namePart><namePart type="family">PASYK</namePart><affiliation>I Department of Cardiology, Silesian School of Medicine, Silesian Center of Heart Diseases, Zabrze, Poland</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Futura Publishing, Inc.</publisher><place><placeTerm type="text">350 Main Street , Malden , MA 02148‐5018 , USA , and 9600 Garsington Road , Oxford OX4 2DQ , UK .</placeTerm></place><dateIssued encoding="w3cdtf">2003-07</dateIssued><copyrightDate encoding="w3cdtf">2003</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="figures">3</extent><extent unit="tables">6</extent><extent unit="formulas">37</extent><extent unit="references">23</extent></physicalDescription><abstract lang="en">The aim of this study was to compare the electrophysiological features of tachycardia between WPW patients with and without AF. The study population consisted of 114 patients with WPW syndrome and reciprocating tachycardia during electrophysiological study. Two groups were selected: group I with AF during the procedure (n = 42) and the control group n = 72 without AF (group II). Cycle length (V‐V interval), antero A‐V, retrograde V‐A conduction time during tachycardia and indexes V‐A/V‐V were analyzed. In addition, the relation between antero‐, retrograde conduction time, and V‐V was evaluated. Selection of the most predictive factor for AF presence was performed using regression analysis. Significant differences between the two groups were observed. These included a higher rate of tachycardia, shorter anterograde conduction time, A‐V/V‐V‐indexes, longer retrograde conduction time, and V‐A/V‐V‐indexes in group I compared with group II. Significant, positive correlations between anterograde conduction time and V‐V were present in both groups, but retrograde conduction correlated significantly with the V‐V‐interval only in group II and group I (r = 0.37 vs r =−0.01, respectively). Significant, negative correlations between A‐V and V‐A conduction time in all analyzed points has been found to exist in group I (r =−0.45 for the point of maximal preexcitation [PMP]), whereas there were no significant correlations between these parameters in group II (r = 0.04). The most powerful AF predictor has been identified as the V‐A/V‐V index. The presence of AF in WPW syndrome may be associated with discrete patient characteristics. Ventricular activation occurs earlier, and atrial later, in the tachycardia cycle in AF than in patients free of AF. The different ability of the accessory pathway for adaptation to tachycardia rate changes in group I causes prolonged retrograde conduction over the pathway while the tachycardia rate increases. (PACE 2003; 26[Pt. I]:1479–1488)</abstract><subject lang="en"><genre>Keywords</genre><topic>WPW syndrome</topic><topic>atrial fibrillation</topic><topic>accessory pathway</topic><topic>atrioventricular reentry tachycardia</topic></subject><relatedItem type="host"><titleInfo><title>Pacing and Clinical Electrophysiology</title></titleInfo><genre type="Journal">journal</genre><identifier type="ISSN">0147-8389</identifier><identifier type="eISSN">1540-8159</identifier><identifier type="DOI">10.1111/(ISSN)1540-8159</identifier><identifier type="PublisherID">PACE</identifier><part><date>2003</date><detail type="volume"><caption>vol.</caption><number>26</number></detail><detail type="issue"><caption>no.</caption><number>7p1</number></detail><extent unit="pages"><start>1479</start><end>1488</end><total>10</total></extent></part></relatedItem><identifier type="istex">F20C8F306FBD0581265408381CDB4F233C9606CD</identifier><identifier type="DOI">10.1046/j.1460-9592.2003.t01-1-00214.x</identifier><identifier type="ArticleID">PACE214</identifier><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>Blackwell Futura Publishing, Inc.</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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