Abstract | BACKGROUND: METHOD AND RESULTS: Guided by the mapped perinodal slow potential, atrioventricular nodal reentrant tachycardia was successfully eliminated in all of 55 consecutive patients in one session. Fifty two patients (94.5%) had confirmed slow potential at the final success sites. Despite the good result, the underlying electrophysiological mechanisms of early success from slow-potential-guiding catheter ablation were heterogeneous: selective slow pathway eradication in 31 patients (56.4%, group A), selective slow pathway modification in 18 patients (32.7%, group B), inadvertent fast pathway damage in six patients (10.9%, group C). Group B patients had the preservation of dual atrioventricular nodal pathways, adequate atrio-Hisian delay, fast pathway facilitation, and a higher frequency of inducible, single non-conducted nodal echo (15/18, 83.3% v 6/31, 19.4% in group A, P << 0.001). The upper communicating path of the circuit was implicated as another site of radiofrequency destruction. Three recurrences were documented in follow up study. However, reablation by the same approach caused complete atrioventricular block in one patient (1.7%, 1/58 procedures). None of the local characteristics of ablation sites was an independent predictor of procedure outcome. CONCLUSIONS:
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Authors | J L Lin, F Y Lin, H M Lo, C D Tseng, T F Cheng, J J Chen, Y Z Tseng, W P Lien |
Journal | British heart journal
(Br Heart J)
Vol. 74
Issue 3
Pg. 268-76
(Sep 1995)
ISSN: 0007-0769 [Print] England |
PMID | 7547021
(Publication Type: Journal Article)
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Topics |
- Adolescent
- Adult
- Aged
- Catheter Ablation
- Electrocardiography
- Female
- Follow-Up Studies
- Heart Conduction System
(physiopathology)
- Humans
- Male
- Middle Aged
- Tachycardia, Atrioventricular Nodal Reentry
(diagnosis, physiopathology, surgery)
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