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Titolo:
CATHETER ABLATION OF SINOATRIAL NODE REENTRANT TACHYCARDIA
Autore:
SANDERS WE; SORRENTINO RA; GREENFIELD RA; SHENASA H; HAMER ME; WHARTON JM;
Indirizzi:
DUKE UNIV,MED CTR,DEPT MED,DIV CARDIOL,BOX 3816 DURHAM NC 27710 DUKE UNIV,MED CTR,DEPT MED,DIV CARDIOL DURHAM NC 27710
Titolo Testata:
Journal of the American College of Cardiology
fascicolo: 4, volume: 23, anno: 1994,
pagine: 926 - 934
SICI:
0735-1097(1994)23:4<926:CAOSNR>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
ECTOPIC ATRIAL TACHYCARDIA; BUNDLE-BRANCH REENTRY; SUPRAVENTRICULAR TACHYCARDIA; ELECTROPHYSIOLOGIC OBSERVATIONS; RADIOFREQUENCY ABLATION; SINUS TACHYCARDIA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
28
Recensione:
Indirizzi per estratti:
Citazione:
W.E. Sanders et al., "CATHETER ABLATION OF SINOATRIAL NODE REENTRANT TACHYCARDIA", Journal of the American College of Cardiology, 23(4), 1994, pp. 926-934

Abstract

Objectives. This study evaluates 1) the safety and efficacy of catheter delivery of radiofrequency current to eliminate sustained sinoatrial node reentrant tachycardia; 2) the incidence of sinoatrial node reentrant tachycardia in the current group of patients undergoing electrophysiologic study for paroxysmal supraventricular tachycardia; and 3) the association of sinoatrial node reentrant tachycardia with other tachyarrhythmias. Background. Sustained sinoatrial node reentrant tachycardia is an uncommon cause of paroxysmal supraventricular tachycardia that is reported to occur infrequently in conjunction with other arrhythmias. Although pharmacologic and surgical therapies are available, there is limited information with regard to catheter ablation of sinoatrial node reentrant tachycardia. Methods. Ten patients with sustained sinoatrial node reentrant tachycardia underwent electrophysiologic study and radiofrequency current ablation. Patients were followed up for 9.2 +/- 6.0 months. Results. Of 343 consecutive patients referred for electrophysiologic evaluation of paroxysmal supraventricular tachycardia, 11 (3.2%) were found to have inducible sustained sinoatrial node reentrant tachycardia. Nine of the 11 patients had other associated arrhythmias, including atrioventricular (AV) node reentrant tachycardia (6patients), AV reciprocating tachycardia (2 patients), ectopic atrial tachycardia (2 patients) and bundle branch reentrant tachycardia (1 patient). In 10 patients, direct ablation of sinoatrial node reentrant tachycardia was attempted and was successful in all (confidence interval for failure 0-0.26). Sinoatrial node reentrant tachycardia was eliminated with a median of four radiofrequency current applications (range1 to 10) at 20 to 30 W. Successful ablation site characteristics during sinoatrial node reentrant tachycardia included 1) atrial activationgreater than or equal to 35 ms (mean 44 +/- 8 ms) before the onset ofthe surface P wave, 2) atrial activation greater than or equal to 20 ms (mean 28 +/- 6 ms) before the onset of high right atrial activation, and 3) significantly prolonged and fractionated electrograms (mean duration 87 +/- 21 ms). No complications were encountered, and there have been no recurrences of sinoatrial node reentrant tachycardia. Conclusions. Sinoatrial node reentrant tachycardia may be effectively and safely treated with radiofrequency current ablation at the site of earliest atrial activation.

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Documento generato il 30/11/20 alle ore 03:16:23