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Titolo:
A new radiofrequency thermal balloon catheter for pulmonary vein isolation
Autore:
Tanaka, K; Satake, S; Saito, S; Takahashi, S; Hiroe, Y; Miyashita, Y; Tanaka, S; Tanaka, T; Watanabe, Y;
Indirizzi:
Shonan Kamakura Gen Hosp, Ctr Heart, Kamakura, Kanagawa 2478533, Japan Shonan Kamakura Gen Hosp Kamakura Kanagawa Japan 2478533 a 2478533, Japan Tokyo Metropolitan Hiro O Gen Hosp, Div Pathol, Tokyo, Japan Tokyo Metropolitan Hiro O Gen Hosp Tokyo Japan Div Pathol, Tokyo, Japan
Titolo Testata:
JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY
fascicolo: 7, volume: 38, anno: 2001,
pagine: 2079 - 2086
SICI:
0735-1097(200112)38:7<2079:ANRTBC>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
FOCAL ATRIAL-FIBRILLATION; ECTOPIC BEATS; ELECTROPHYSIOLOGICAL CHARACTERISTICS; CORONARY ANGIOPLASTY; ABLATION; INITIATION; STENOSIS; SYSTEM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Satake, S Shonan Kamakura Gen Hosp, Ctr Heart, 1202-1 Yamazaki, Kamakura, Kanagawa 2478533, Japan Shonan Kamakura Gen Hosp 1202-1 Yamazaki Kamakura Kanagawa Japan 2478533
Citazione:
K. Tanaka et al., "A new radiofrequency thermal balloon catheter for pulmonary vein isolation", J AM COL C, 38(7), 2001, pp. 2079-2086

Abstract

OBJECTIVES We sought to evaluate whether porcine pulmonary vein (PV) isolation (PVI) can be produced by ablation using our novel radiofrequency (RF) thermal balloon catheter (RBC). BACKGROUND It has been proposed that PVI can prevent focal atrial fibrillation (AF) originating in or close to the PV. METHODS The PBC is composed of a 12F main shaft, a 4F inner tube and a balloon. Inside the balloon, there is a unipolar coil electrode with a thermocouple sensor mounted along the tube, the former to deliver RF energy (13.56MHz) and the latter to monitor the temperature. After the presence of a PVpotential was confirmed, the RBC was safely inserted into the left atrium (LA) by the trans-septal approach. Once the balloon was inflated and optimally wedged at the junction between the PV and LA, RF energy was applied for5 min. Radiofrequency catheter ablation (RFA) was repeated up to three times, until elimination of the PV potential or dissociation between the LA and PV was observed. Finally, each heart was examined histologically. RESULTS In 18 PVs that had PV potentials, PVI was performed, resulting in success in 15 (success rate 83%, 95% confidence interval [CI] 58.0% to 96.3%; failure rate 17%, 95% CI 3.7% to 42.0%). After successful PVI, the PV potentials completely disappeared and the histologic examination revealed circumferential, transmural necrosis around the PV trunks. No major early complications, such as PV stenosis or macroscopic thrombosis, were observed. CONCLUSIONS The RBC was useful for PVI. (J Am Coll Cardiol 2001;38:2079-86) (C) 2001 by the American College of Cardiology.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 05:21:12