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Role of anterior compact node extension (fast pathway) ablation on the basic and rate-dependent properties of the atrioventricular node

Mirabbasi, A. and Khori, V. and Nayebpour, M. and Rakhshan, E. (2010) Role of anterior compact node extension (fast pathway) ablation on the basic and rate-dependent properties of the atrioventricular node. EUROPEAN HEART JOURNAL SUPPLEMENTS, 12 (A). S17-S34.

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Abstract

Objectives: The aim of this study was to obtain new insight into possible relation between functional properties of slow concealed pathway and rate-dependent properties of atrioventricular (AV) node. Material and methods: Rate-dependent nodal properties of recovery, facilitation, and fatigue were characterized by stimulation protocols in one group of (n=7) isolated superfused AV-nodal rabbits. Small miniature lesions were made by delivering constant voltage (110 V, 30 s) with unipolar silver electrode. Results: Fast pathway ablation decreased facilitation and had no significant effect on fatigue and nodal refractoriness. The most important effect of fast pathway ablation was prolongation of minimum conduction time. Conclusion: The FP-ablation revealed the presence of the concealed SP. Rate-dependent properties of node dependent to dynamic interaction between concealed slow with slow pathway. Fast pathway involved in the mechanism of facilitation.

Item Type: Article
Additional Information: International Congress of Cardiology, Hong Kong, PEOPLES R CHINA, FEB 26-28, 2010
Subjects: موارد کلی
Divisions: معاونت تحقیقات و فناوری
Depositing User: GOUMS
Date Deposited: 27 Apr 2015 10:17
Last Modified: 21 Jun 2017 17:53
URI: http://eprints.goums.ac.ir/id/eprint/4023

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