NavX-Guided Slow Pathway Ablation Is Superior to Conventional Fluoroscopy-Guided Ablation
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概要
- 論文の詳細を見る
Conventional fluoroscopy-guided slow pathway ablation for patients with atrioventricular nodal reentrant tachycardia (AVNRT) sometimes requires multiple RF energy applications and long fluoroscopic time. We hypothesized that NavX-guided ablation would require less number of RF energy application and fluoroscopic time without impairing the safety. Eighty consecutive patients with AVNRT undergoing slow pathway ablation were included, in whom the former 40 patients underwent fluoroscopy-guided slow pathway ablation (Group F) and the latter 40 NavX-guided slow pathway ablation (Group N). In both groups, ablation was performed at a site with the most prominent slow potential (SP) which was defined as a low-frequency potential following sharp atrial potential. In Group N, serial His bundle electrograms and SP were precisely mapped with 58±18 sampling points, and projected on the pre-constructed geometry around Koch’s triangle and coronary sinus. There was no difference in age, gender and other patient characteristics between the 2 groups. The number and amount of RF energy application, and fluoroscopic time were markedly reduced in Group N compared with Group F (1.7±1.2 vs. 3.5±2.4 times, 1607±1358 vs. 2543±1728 J, 8.3±3.1 vs. 13.4±5.2 min, respectively). No complication was noted and no recurrence were observed during a follow-up period of 12±6 months in all patients. NavX-guided slow pathway ablation is superior to fluoroscopy-guided one in terms of energy application and the fluoroscopic time.
著者
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TSUCHIYA Takeshi
EP Expert Doctors-Team TSUCHIYA
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Yamaguchi Takanori
EP Expert Doctors-Team Tsuchiya
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Miyamoto Koji
National Cardiovascular Center
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Nagamoto Yasutsugu
Saga Prefectural Hospital Koseikan
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