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Titolo:
In vivo and in vitro study of radio-frequency application with a new long linear probe: Implication for the maze operation
Autore:
Shimoike, E; Kaji, Y; Ueda, N; Maruyama, T; Kanaya, S; Niho, Y;
Indirizzi:
Kyushu Univ, Sch Med, Dept Internal Med 1, Higashi Ku, Fukuoka 8128582, Japan Kyushu Univ Fukuoka Japan 8128582 1, Higashi Ku, Fukuoka 8128582, Japan Kyushu Univ, Inst Hlth Sci, Higashi Ku, Fukuoka 8128582, Japan Kyushu Univ Fukuoka Japan 8128582 ci, Higashi Ku, Fukuoka 8128582, Japan
Titolo Testata:
JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY
fascicolo: 1, volume: 120, anno: 2000,
pagine: 164 - 172
SICI:
0022-5223(200007)120:1<164:IVAIVS>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
RADIOFREQUENCY CATHETER ABLATION; ATRIAL-FIBRILLATION; CURATIVE APPROACH; SURGERY; DOGS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Shimoike, E Kyushu Univ, Sch Med, Dept Internal Med 1, Higashi Ku, Maidashi 3-1-1, Fukuoka 8128582, Japan Kyushu Univ Maidashi 3-1-1 Fukuoka Japan 8128582 28582, Japan
Citazione:
E. Shimoike et al., "In vivo and in vitro study of radio-frequency application with a new long linear probe: Implication for the maze operation", J THOR SURG, 120(1), 2000, pp. 164-172

Abstract

Background: The maze operation for atrial fibrillation is effective but highly invasive. We tested, both in vitro and in vivo, a new technique for creating long linear atrial lesions with a custom-made, 25-mm long, stainless-steel, linear probe and a corresponding 500-kHz generator fur assistance in the maze operation. Methods: In the in vitro study with the isolated canine atria, the power of the delivered radio-frequency energy and the saline irrigating flow rate were changed independently, and the sizes of the lesions were measured. In the in vivo study radio-frequency energy was delivered to 4 portions (ie. the smooth and trabeculated portions of the right and left atria). The sizesof the lesions were measured, and the histologic features of the lesions were examined. Electrical isolation of the right atrial appendage from the remaining right atrium was attempted by using this linear probe. Results: In the in vitro study the size of the lesion became larger as thedelivered power was increased, although the lesion was limited when the flow rate was high. In the in vivo study the size of the lesion was equal at the 4 different sites. Histologic examinations demonstrated linear and transmural lesions, and electrophysiologic examinations revealed conduction block between the right atrial appendage and the remaining right atrium,Conclusions: The new original long linear probe was effective fur creatingtransmural linear atrial lesions with the irrigation method, presenting the possibility of an intraoperative technique that mimics the maze procedure.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 15:51:48