Coronary artery and myocardium lesion comparison post atrioventricular ring radiofrequency catheter ablation with different catheters
10.3760/cma.j.issn.0253-3758.2009.07.016
- VernacularTitle:应用不同射频导管电极消融犬房室环处心肌组织的损伤范围及其相邻冠状动脉损伤的研究
- Author:
Hong-Yue GU
1
;
Ming-Yu SHI
;
Yong-Wei ZHAO
;
Xue-Song YIN
;
Xiu-Fen QU
Author Information
1. 哈尔滨医科大学附属第一医院
- Keywords:
Catheter ablation;
Myocardium;
Coronary vessels;
Wounds and injuries
- From:
Chinese Journal of Cardiology
2009;37(7):630-633
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the extent of myocardium and coronary artery lesion post trioventricular ring radiofrequency catheter ablation with different tip catheters.Methods Twenty-one healthy dogs were randomly divided into 64℃/50 W/100 s,64 ℃/100 W/100 s,45 ℃/45 W/100 s groups and ablated by 4 mm tip catheter,8 mm tip catheter and irrigated tip catheter respectively.Left atrioventrieular ring and right atrioventricular ring ablation were performed in all dogs.After ablation,myocardium lesion volume was calculated as 1/6π × length × width × depth.Histological examinations were performed at the myocardium tissue at ablation sites.Results The lesion depths post 8 mm tip catheter ablation (7.18 ± 1.72) mm and irrigated tip catheter ablation (7.99 ± 1.77) mm were similar and significantly deeper than that post 4 mm tip catheter ablation (4.54 ± 1.38) ram,P<0.01.Similar results were found in terms of lesion volume [(356.76 ± 94.44) mm3 post 8 mm tip catheter ablation,(391.69 ± 109.54)mm3 post irrigated tip catheter ablation and (191.34±74.52) mm3 post 4 mm tip catheter ablation].Five (5/42,11.9%) transmural myocardium necrosis and 8 (8/42,19%) coronary artery lesions were observed post ablations.Conclusion The extents of post ablation myoeardium and coronary artery lesion were significantly higher induced by 8 nun tip catheter and irrigate tip catheter compared those by 4 mm tip catheter.
