Role of the Compact Node and Its Posterior Extension in Normal Atrioventricular Nodal Conduction, Refractory, and Dual Pathway Properties
Identifieur interne : 003714 ( Main/Curation ); précédent : 003713; suivant : 003715Role of the Compact Node and Its Posterior Extension in Normal Atrioventricular Nodal Conduction, Refractory, and Dual Pathway Properties
Auteurs : Karim Khalife [Canada] ; Jacques Billette [Canada] ; Djamila Medkour [Canada] ; Karyne Martel [Canada] ; Maurice Tremblay [Canada] ; Jun Wang [Canada] ; Li-Jen Lin [Canada]Source :
- Journal of Cardiovascular Electrophysiology [ 1045-3873 ] ; 1999-11.
English descriptors
Abstract
AV Nodal Conduction and Dual Pathways. Introduction: The functional origin of AV nodal conduction, refractory, and dual pathway properties remains debated. The hypothesis that normal conduction and refractory properties of the compact node and its posterior nodal extension (PNE) play a critical role in the slow and the fast pathway, respectively, is tested with ablation lesions targeting these structures. Methods and Results: A premature atrial stimulation protocol was performed before and after PNE ablation in six isolated rabbit heart preparations. Discrete (<300 μm) histologically controlled PNE lesions amputated the AV nodal recovery curve from its left steep portion reflecting slow pathway conduction and prevented reentry without affecting the right smooth fast pathway portion of the curve. The ablation shortened A2H2max from 159 ± 16 ms to 123 ± 11 msec (P < 0.01) and prolonged the effective refractory period from 104 ± 6 msec to 119 ± 11 msec (P < 0.01) without affecting A2H2 min (55 ± 9 msec vs 55 ± 8 msec; P = NS) and functional refractory period (174 ± 7 msec vs 175 ± 6 msec; P = NS). These results did not vary with the input reference used. In six other preparations, lesions applied to the compact node after PNE ablation shifted the fast pathway portion of the recovery curve to longer conduction times and prolonged the functional refractory period, suggesting a compact node involvement in the fast pathway. Conclusion: The normal AV nodal conduction and refractory properties reflect the net result of the interaction between a slow and a fast pathway, which primarily arise from the asymmetric properties of the PNE and compact node, respectively.
Url:
DOI: 10.1111/j.1540-8167.1999.tb00203.x
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: Pour aller vers cette notice dans l'étape Curation :001199
- to stream Istex, to step Curation: Pour aller vers cette notice dans l'étape Curation :001199
- to stream Istex, to step Checkpoint: Pour aller vers cette notice dans l'étape Curation :001353
- to stream Main, to step Merge: Pour aller vers cette notice dans l'étape Curation :003C93
Links to Exploration step
ISTEX:60F7CE56E8582A8DD3DE41BAF0434C8A376B7383Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Role of the Compact Node and Its Posterior Extension in Normal Atrioventricular Nodal Conduction, Refractory, and Dual Pathway Properties</title>
<author><name sortKey="Khalife, Karim" sort="Khalife, Karim" uniqKey="Khalife K" first="Karim" last="Khalife">Karim Khalife</name>
</author>
<author><name sortKey="Billette, Jacques" sort="Billette, Jacques" uniqKey="Billette J" first="Jacques" last="Billette">Jacques Billette</name>
</author>
<author><name sortKey="Medkour, Djamila" sort="Medkour, Djamila" uniqKey="Medkour D" first="Djamila" last="Medkour">Djamila Medkour</name>
</author>
<author><name sortKey="Martel, Karyne" sort="Martel, Karyne" uniqKey="Martel K" first="Karyne" last="Martel">Karyne Martel</name>
</author>
<author><name sortKey="Tremblay, Maurice" sort="Tremblay, Maurice" uniqKey="Tremblay M" first="Maurice" last="Tremblay">Maurice Tremblay</name>
</author>
<author><name sortKey="Wang, Jun" sort="Wang, Jun" uniqKey="Wang J" first="Jun" last="Wang">Jun Wang</name>
</author>
<author><name sortKey="Lin, Li En" sort="Lin, Li En" uniqKey="Lin L" first="Li-Jen" last="Lin">Li-Jen Lin</name>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">ISTEX</idno>
<idno type="RBID">ISTEX:60F7CE56E8582A8DD3DE41BAF0434C8A376B7383</idno>
<date when="1999" year="1999">1999</date>
<idno type="doi">10.1111/j.1540-8167.1999.tb00203.x</idno>
<idno type="url">https://api-v5.istex.fr/document/60F7CE56E8582A8DD3DE41BAF0434C8A376B7383/fulltext/pdf</idno>
<idno type="wicri:Area/Istex/Corpus">001199</idno>
<idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001199</idno>
<idno type="wicri:Area/Istex/Curation">001199</idno>
<idno type="wicri:Area/Istex/Checkpoint">001353</idno>
<idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">001353</idno>
<idno type="wicri:doubleKey">1045-3873:1999:Khalife K:role:of:the</idno>
<idno type="wicri:Area/Main/Merge">003C93</idno>
<idno type="wicri:Area/Main/Curation">003714</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Role of the Compact Node and Its Posterior Extension in Normal Atrioventricular Nodal Conduction, Refractory, and Dual Pathway Properties</title>
<author><name sortKey="Khalife, Karim" sort="Khalife, Karim" uniqKey="Khalife K" first="Karim" last="Khalife">Karim Khalife</name>
<affiliation wicri:level="3"><country xml:lang="fr">Canada</country>
<wicri:regionArea>Department de Physiologie, Faculté de Médecine, Université de Montréal, Montréal</wicri:regionArea>
<placeName><settlement type="city">Montréal</settlement>
<region type="state">Québec</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Billette, Jacques" sort="Billette, Jacques" uniqKey="Billette J" first="Jacques" last="Billette">Jacques Billette</name>
<affiliation wicri:level="3"><country xml:lang="fr">Canada</country>
<wicri:regionArea>Department de Physiologie, Faculté de Médecine, Université de Montréal, Montréal</wicri:regionArea>
<placeName><settlement type="city">Montréal</settlement>
<region type="state">Québec</region>
</placeName>
</affiliation>
<affiliation wicri:level="1"><country wicri:rule="url">Canada</country>
</affiliation>
</author>
<author><name sortKey="Medkour, Djamila" sort="Medkour, Djamila" uniqKey="Medkour D" first="Djamila" last="Medkour">Djamila Medkour</name>
<affiliation wicri:level="3"><country xml:lang="fr">Canada</country>
<wicri:regionArea>Department de Physiologie, Faculté de Médecine, Université de Montréal, Montréal</wicri:regionArea>
<placeName><settlement type="city">Montréal</settlement>
<region type="state">Québec</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Martel, Karyne" sort="Martel, Karyne" uniqKey="Martel K" first="Karyne" last="Martel">Karyne Martel</name>
<affiliation wicri:level="3"><country xml:lang="fr">Canada</country>
<wicri:regionArea>Department de Physiologie, Faculté de Médecine, Université de Montréal, Montréal</wicri:regionArea>
<placeName><settlement type="city">Montréal</settlement>
<region type="state">Québec</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Tremblay, Maurice" sort="Tremblay, Maurice" uniqKey="Tremblay M" first="Maurice" last="Tremblay">Maurice Tremblay</name>
<affiliation wicri:level="3"><country xml:lang="fr">Canada</country>
<wicri:regionArea>Department de Physiologie, Faculté de Médecine, Université de Montréal, Montréal</wicri:regionArea>
<placeName><settlement type="city">Montréal</settlement>
<region type="state">Québec</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Wang, Jun" sort="Wang, Jun" uniqKey="Wang J" first="Jun" last="Wang">Jun Wang</name>
<affiliation wicri:level="3"><country xml:lang="fr">Canada</country>
<wicri:regionArea>Department de Physiologie, Faculté de Médecine, Université de Montréal, Montréal</wicri:regionArea>
<placeName><settlement type="city">Montréal</settlement>
<region type="state">Québec</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Lin, Li En" sort="Lin, Li En" uniqKey="Lin L" first="Li-Jen" last="Lin">Li-Jen Lin</name>
<affiliation wicri:level="3"><country xml:lang="fr">Canada</country>
<wicri:regionArea>Department de Physiologie, Faculté de Médecine, Université de Montréal, Montréal</wicri:regionArea>
<placeName><settlement type="city">Montréal</settlement>
<region type="state">Québec</region>
</placeName>
</affiliation>
</author>
</analytic>
<monogr></monogr>
<series><title level="j">Journal of Cardiovascular Electrophysiology</title>
<idno type="ISSN">1045-3873</idno>
<idno type="eISSN">1540-8167</idno>
<imprint><publisher>Blackwell Publishing Ltd</publisher>
<pubPlace>Oxford, UK</pubPlace>
<date type="published" when="1999-11">1999-11</date>
<biblScope unit="volume">10</biblScope>
<biblScope unit="issue">11</biblScope>
<biblScope unit="page" from="1439">1439</biblScope>
<biblScope unit="page" to="1451">1451</biblScope>
</imprint>
<idno type="ISSN">1045-3873</idno>
</series>
<idno type="istex">60F7CE56E8582A8DD3DE41BAF0434C8A376B7383</idno>
<idno type="DOI">10.1111/j.1540-8167.1999.tb00203.x</idno>
<idno type="ArticleID">JCE1439</idno>
</biblStruct>
</sourceDesc>
<seriesStmt><idno type="ISSN">1045-3873</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>ablation</term>
<term>dual pathways</term>
<term>inputs</term>
<term>reentry</term>
<term>supraventricular tachyarrhythmias</term>
</keywords>
</textClass>
<langUsage><language ident="en">en</language>
</langUsage>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">AV Nodal Conduction and Dual Pathways. Introduction: The functional origin of AV nodal conduction, refractory, and dual pathway properties remains debated. The hypothesis that normal conduction and refractory properties of the compact node and its posterior nodal extension (PNE) play a critical role in the slow and the fast pathway, respectively, is tested with ablation lesions targeting these structures. Methods and Results: A premature atrial stimulation protocol was performed before and after PNE ablation in six isolated rabbit heart preparations. Discrete (<300 μm) histologically controlled PNE lesions amputated the AV nodal recovery curve from its left steep portion reflecting slow pathway conduction and prevented reentry without affecting the right smooth fast pathway portion of the curve. The ablation shortened A2H2max from 159 ± 16 ms to 123 ± 11 msec (P < 0.01) and prolonged the effective refractory period from 104 ± 6 msec to 119 ± 11 msec (P < 0.01) without affecting A2H2 min (55 ± 9 msec vs 55 ± 8 msec; P = NS) and functional refractory period (174 ± 7 msec vs 175 ± 6 msec; P = NS). These results did not vary with the input reference used. In six other preparations, lesions applied to the compact node after PNE ablation shifted the fast pathway portion of the recovery curve to longer conduction times and prolonged the functional refractory period, suggesting a compact node involvement in the fast pathway. Conclusion: The normal AV nodal conduction and refractory properties reflect the net result of the interaction between a slow and a fast pathway, which primarily arise from the asymmetric properties of the PNE and compact node, respectively.</div>
</front>
</TEI>
</record>
Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Canada/explor/ParkinsonCanadaV1/Data/Main/Curation
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 003714 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Curation/biblio.hfd -nk 003714 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien |wiki= Wicri/Canada |area= ParkinsonCanadaV1 |flux= Main |étape= Curation |type= RBID |clé= ISTEX:60F7CE56E8582A8DD3DE41BAF0434C8A376B7383 |texte= Role of the Compact Node and Its Posterior Extension in Normal Atrioventricular Nodal Conduction, Refractory, and Dual Pathway Properties }}
This area was generated with Dilib version V0.6.29. |