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Titolo:
Atrial ectopy originating from the posteroinferior atrium during radiofrequency catheter ablation of atrioventricular nodal reentrant tachycardia
Autore:
Tsuchiya, T; Okumura, K; Tabuchi, T; Iwasa, A; Ohgushi, M; Yasue, H; Honda, T; Honda, T; Hayasaki, K;
Indirizzi:
HirosakinUniv, Sch Med, Dept Internal Med 2, Hirosaki, Aomori 0366216, Japa Hirosaki Univ Hirosaki Aomori Japan 0366216 irosaki, Aomori 0366216, Japa Kumamoto Univ, Sch Med, Div Cardiol, Kumamoto 860, Japan Kumamoto Univ Kumamoto Japan 860 h Med, Div Cardiol, Kumamoto 860, Japan Saiseikai Kumamoto Hosp, Div Cardiol, Kumamoto, Japan Saiseikai Kumamoto Hosp Kumamoto Japan sp, Div Cardiol, Kumamoto, Japan
Titolo Testata:
PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY
fascicolo: 5, volume: 22, anno: 1999,
pagine: 727 - 737
SICI:
0147-8389(199905)22:5<727:AEOFTP>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
SLOW-PATHWAY CONDUCTION; JUNCTIONAL RHYTHM; ENERGY;
Keywords:
radiofrequency catheter ablation; slow pathway; junctional ectopy; atrial ectopy;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Okumura, K Hirosaki0366216,ch Med, Dept Internal Med 2, Zaifu Cho 5, Hirosaki, Aomori Hirosaki Univ Zaifu Cho 5 Hirosaki Aomori Japan 0366216 Aomori
Citazione:
T. Tsuchiya et al., "Atrial ectopy originating from the posteroinferior atrium during radiofrequency catheter ablation of atrioventricular nodal reentrant tachycardia", PACE, 22(5), 1999, pp. 727-737

Abstract

Atrial ectopy sometimes appears during RF ablation of the slow pathway in patients with atrioventricular nodal reentrant tachycardia (AVNRT). However, its origin, characteristics, and significance are still unclear. To examine these issues, we analyzed 67 consecutive patients with AVNRT (60 with slow-fast AVNRT and 7 with fast-slow AVNRT), which was successfully eliminated by RF ablation to the sites with a slow potential in 63 patients and withthe earliest activations of retrograde slow pathway conduction in 4 patients. During successful RF ablation, junctional ectopy with the activation sequence showing H-A-V at the His-bundle region appeared in 52 patients (group A) and atrial ectopy with negative P waves in the inferior leads preceding the QRS and the activation sequence showing A-H-V at the His-bundle region appeared in 15 patients (group B). Atrial ectopy was associated with (10 patients) or without junctional ectopy 15 patients). Before RF ablation, retrograde slow pathway conduction induced during ventricular burst and/or extrastimulus pacing was more frequently demonstrated in group B than in group A (9/15 [60%] vs 1/52 [2%], P < 0.002). Successful ablation site in groupA was distributed between the His-bundle region and coronary sinus ostium,while that in group B was confined mostly to the site anterior to the coronary sinus ostium. In group B, atrial ectopy also appeared in 21% of the unsuccessful RF ablations. In conclusion, atrial ectopy is relatively common during slow pathway ablation and observed in 8% of RF applications overall and 21% of RF applications that successfully eliminated inducible AVNRT. A trial ectopy appears to be closely related to successful slow pathway ablation among patients with manifest retrograde slow pathway function.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 16:54:01