Unexpected Emergence of Manifest Preexcitation Following Transcatheter Ablation of Concealed Accessory Pathways
Identifieur interne : 002500 ( Main/Exploration ); précédent : 002499; suivant : 002501Unexpected Emergence of Manifest Preexcitation Following Transcatheter Ablation of Concealed Accessory Pathways
Auteurs : Stephan Willems [Allemagne] ; Mohammad Shenasa [Allemagne] ; Martin Borggrefe [Allemagne] ; Karlheinz Seidl [Allemagne] ; Xu Chen [Allemagne] ; Gerhard Hindricks [Allemagne] ; Wilhelm Haverkamp [Allemagne] ; Günter Breithardt [Allemagne]Source :
- Journal of Cardiovascular Electrophysiology [ 1045-3873 ] ; 1993-08.
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Abstract
Preexcitation After Catheter Ablation. Introduction: The basis for anterograde or retrograde unidirectional block of accessory pathways still remains a controversial issue. Methods and Results: Four of 19 consecutive patients (1 mule, 3 Female; ages 27 to 34 years) who underwent transcatheter ablation of concealed accessory pathways developed manifest preexcitation after the ablation. The location of the concealed accessory pathways in these four patients were right lateral, left posteroseptal, left posterolateral, and left lateral. Radiofrequency current was used in three of the four patients and high energy direct current in one patient. After ablation, manifest preexcitation was observed in these four patients for the first time. Manifest preexcitation developed immediately after ablation in two of the four patients and after 4 and 14 days in the other two. Detailed endocardial mapping revealed that the manifest preexcitation originated from the same location as the concealed pathways. Subsequently, catheter ablation was successfully performed in three of the four patients using radiofrequency current. One patient underwent successful surgical ablation. No recurrence of preexcitation was observed during a follow‐up period of 9 to 38 months. All patients remained free of arrhythmias. Conclusion: The basis for this unexpected emergence of preexcitation in these patients with only retrograde conducting accessory pathways deserves further investigation. Although not compared in the present study, this phenomenon has not been reported in patients who underwent surgical interruption of accessory pathways. We postulate that a lesion at the site of insertion of the accessory pathway had modified the anterograde conduction capacity.
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DOI: 10.1111/j.1540-8167.1993.tb01284.x
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Introduction: The basis for anterograde or retrograde unidirectional block of accessory pathways still remains a controversial issue. Methods and Results: Four of 19 consecutive patients (1 mule, 3 Female; ages 27 to 34 years) who underwent transcatheter ablation of concealed accessory pathways developed manifest preexcitation after the ablation. The location of the concealed accessory pathways in these four patients were right lateral, left posteroseptal, left posterolateral, and left lateral. Radiofrequency current was used in three of the four patients and high energy direct current in one patient. After ablation, manifest preexcitation was observed in these four patients for the first time. Manifest preexcitation developed immediately after ablation in two of the four patients and after 4 and 14 days in the other two. Detailed endocardial mapping revealed that the manifest preexcitation originated from the same location as the concealed pathways. Subsequently, catheter ablation was successfully performed in three of the four patients using radiofrequency current. One patient underwent successful surgical ablation. No recurrence of preexcitation was observed during a follow‐up period of 9 to 38 months. All patients remained free of arrhythmias. Conclusion: The basis for this unexpected emergence of preexcitation in these patients with only retrograde conducting accessory pathways deserves further investigation. Although not compared in the present study, this phenomenon has not been reported in patients who underwent surgical interruption of accessory pathways. We postulate that a lesion at the site of insertion of the accessory pathway had modified the anterograde conduction capacity.</div></front></TEI><affiliations><list><country><li>Allemagne</li></country><region><li>District de Münster</li><li>Rhénanie-du-Nord-Westphalie</li></region><settlement><li>Münster</li></settlement></list><tree><country name="Allemagne"><region name="Rhénanie-du-Nord-Westphalie"><name sortKey="Willems, Stephan" sort="Willems, Stephan" uniqKey="Willems S" first="Stephan" last="Willems">Stephan Willems</name></region><name sortKey="Borggrefe, Martin" sort="Borggrefe, Martin" uniqKey="Borggrefe M" first="Martin" last="Borggrefe">Martin Borggrefe</name><name sortKey="Breithardt, Gunter" sort="Breithardt, Gunter" uniqKey="Breithardt G" first="Günter" last="Breithardt">Günter Breithardt</name><name sortKey="Chen, Xu" sort="Chen, Xu" uniqKey="Chen X" first="Xu" last="Chen">Xu Chen</name><name sortKey="Haverkamp, Wilhelm" sort="Haverkamp, Wilhelm" uniqKey="Haverkamp W" first="Wilhelm" last="Haverkamp">Wilhelm Haverkamp</name><name sortKey="Hindricks, Gerhard" sort="Hindricks, Gerhard" uniqKey="Hindricks G" first="Gerhard" last="Hindricks">Gerhard Hindricks</name><name sortKey="Seidl, Karlheinz" sort="Seidl, Karlheinz" uniqKey="Seidl K" first="Karlheinz" last="Seidl">Karlheinz Seidl</name><name sortKey="Shenasa, Mohammad" sort="Shenasa, Mohammad" uniqKey="Shenasa M" first="Mohammad" last="Shenasa">Mohammad Shenasa</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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