| Title | Ablation of Ligament of Marshall Attenuates Atrial Vulnerability to Fibrillation Induced by Inferior Left Atrial Fat Pad Stimulation in Dogs |
| Authors | Liu, Xingpeng Yan, Qian Li, Hui Tian, Ying Su, Jing Tang, Ribo Lu, Chunshan Dong, Jianzeng Ma, Changsheng |
| Affiliation | Capital Med Univ, Beijing Anzhen Hosp, Dept Cardiol, Ctr Atrial Fibrillat, Beijing 100029, Peoples R China. Beijing Univ, Hlth Sci Ctr, Dept Pathol, Beijing 100871, Peoples R China. Capital Med Univ, Beijing Anzhen Hosp, Dept Cardiol, Ctr Atrial Fibrillat, 2 Anzhen Rd, Beijing 100029, Peoples R China. |
| Keywords | atrial fibrillation ligament of Marshall catheter ablation atrial fat pad autonomic nervous system CATHETER ABLATION NEURAL-NETWORK PULMONARY VEIN MODEL TACHYCARDIA PLEXI |
| Issue Date | 2010 |
| Publisher | journal of cardiovascular electrophysiology |
| Citation | JOURNAL OF CARDIOVASCULAR ELECTROPHYSIOLOGY.2010,21,(9),1024-1030. |
| Abstract | Objective: To investigate the impact of LOM ablation on atrial vulnerability to AF induced by inferior left atrial fat pad (ILAFP) stimulation in dogs. Methods: AF inducibility and atrial effective refractory period (ERP) were elevated before and after LOM ablation in 8 of 14 dogs (the ablation group). Same protocol but without LOM ablation was conducted in the remaining 6 dogs (the control group). The activation patterns of LOM and left pulmonary veins (LPVs) during sustained AF were analyzed. The distribution of epicardial cholinergic nerve fibers between LOM and ILAFP was investigated in the control group. Results: Ablation of LOM significantly attenuated AF inducibility (87.5% vs 33.3%, P < 0.001) and prolonged ERPs of the structures in contiguity with LOM (P < 0.05) in the ablation group. In contrast, there was no significant change in ERPs and AF inducibility in the control group. During sustained AF, fractionated atrial electrograms were more common in the LOM area than the LPVs (84% vs 18% of the analyzed episodes, P < 0.001). In 46.7% of the episodes with identifiable LOM spikes, atrial potentials, and LOM spikes were related in 2:1 or 3:2 pattern during the intermittent organized activity. Acetylcholinesterase staining revealed a close cholinergic nerved relationship between LOM and ILAFP. Conclusions: LOM plays a critical role in maintaining AF induced by stimulation of ILAFP. Ablation of LOM can markedly attenuate AF inducibility in this model. (J Cardiovasc Electrophysiol, Vol. 21, pp. 1024-1030, September 2010). |
| URI | http://hdl.handle.net/20.500.11897/257516 |
| ISSN | 1045-3873 |
| DOI | 10.1111/j.1540-8167.2010.01746.x |
| Indexed | SCI(E) |
| Appears in Collections: | 医学部待认领 |
