Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Radiofrequency current application on immature porcine atrial myocardium: No evidence of areas of slow conduction after 12-month follow-up
Autore:
Windhagen-Mahnert, B; Bokenkamp, R; Bertram, H; Peuster, M; Hausdorf, G; Paul, T;
Indirizzi:
Hannover Med Sch, Dept Pediat Cardiol, D-30623 Hannover, Germany Hannover Med Sch Hannover Germany D-30623 iol, D-30623 Hannover, Germany
Titolo Testata:
JOURNAL OF CARDIOVASCULAR ELECTROPHYSIOLOGY
fascicolo: 12, volume: 9, anno: 1998,
pagine: 1305 - 1309
SICI:
1045-3873(199812)9:12<1305:RCAOIP>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
ACCESSORY ATRIOVENTRICULAR PATHWAYS; CATHETER ABLATION; SUPRAVENTRICULAR TACHYCARDIA; SMALL CHILDREN; CONNECTIONS; ADOLESCENTS; INFANTS; ENERGY;
Keywords:
radiofrequency catheter ablation; atrial myocardial lesions; action potential characteristics; 12-month follow-up;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Windhagen-Mahnert, B Hannover Med Sch, Dept Pediat Cardiol, D-30623 Hannover, Germany Hannover Med Sch Hannover Germany D-30623 , Germany
Citazione:
B. Windhagen-Mahnert et al., "Radiofrequency current application on immature porcine atrial myocardium: No evidence of areas of slow conduction after 12-month follow-up", J CARD ELEC, 9(12), 1998, pp. 1305-1309

Abstract

Electrophysiologic Sequelae 12 Months After Radiofrequency Current Application. Introduction: Radiofrequency current (RFC) application is a widely used procedure for treatment of supraventricular arrhythmias, The purpose of this study was to investigate late electrophysiologic sequelae of RFC lesions at immature atrial myocardium in pigs, as they have not yet been systematically investigated in vitro. Methods and Results: RFC application (temperature guided) was performed inseven piglets (mean age 6 weeks) by a steerable 6-French electrode catheter positioned at the lateral aspect of the tricuspid valve annulus. After 12months, hearts were removed, and lesions with surrounding tissue were isolated. The viable tissue at the border of the specimen was paced with a cycle length of 500 and 600 msec, One hundred fifty impalements were performed on each specimen using capillary microelectrodes to record action potentialcharacteristics from the lesion's surface and the surrounding tissue. In all seven specimens, no transmembrane action potentials from the fibrotic surface of each of the lesions could be recorded, The surrounding viable tissue was sharply demarcated electrically, No areas of slow conduction were detected, Action potential characteristics as mean maximum diastolic transmembrane potential, mean action potential duration at 90% repolarization, and upstroke velocity of phase 0 of the action potential were all normal. Conclusion: No evidence of areas of slow conduction 12 months after RFC application at immature atrial myocardium suggests that this technique is safe regarding occurrence of late atrial tachyarrhythmias after the procedure.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 09:41:19