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Titolo:
The acute effects of biatrial pacing on atrial depolarization and repolarization
Autore:
Gilligan, DM; Fuller, IA; Clemo, HF; Shepard, RK; Dan, D; Wood, MA; Ellenbogen, KA;
Indirizzi:
Vet Adm Med Ctr, Electrophysiol Serv 111J3, Richmond, VA 23249 USA Vet AdmMed Ctr Richmond VA USA 23249 Serv 111J3, Richmond, VA 23249 USA Virginia Commonwealth Univ, Med Coll Virginia, Dept Internal Med, Div Cardiol,Electrophysiol Sect, Richmond, VA 23298 USA Virginia Commonwealth UnivRichmond VA USA 23298 , Richmond, VA 23298 USA
Titolo Testata:
PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY
fascicolo: 7, volume: 23, anno: 2000,
pagine: 1113 - 1120
SICI:
0147-8389(200007)23:7<1113:TAEOBP>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTROPHYSIOLOGICAL PROPERTIES; SINGLE-SITE; FIBRILLATION; CONDUCTION; FLUTTER; REFRACTORINESS; CARDIOVERSION; PREVENTION; HUMANS;
Keywords:
biatrial pacing; atrial fibrillation; atrial electrophysiology;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Gilligan, DM Vet Adm Med Ctr, Electrophysiol Serv 111J3, 1201 Broad Rock Blvd, Richmond, VA 23249 USA Vet Adm Med Ctr 1201 Broad Rock Blvd Richmond VA USA 23249 SA
Citazione:
D.M. Gilligan et al., "The acute effects of biatrial pacing on atrial depolarization and repolarization", PACE, 23(7), 2000, pp. 1113-1120

Abstract

Permanent biatrial and/or multisite atrial pacing may prevent atrial fibrillation (AF), but the effects on atrial electrophysiology remain incompletely understood. Acute biatrial pacing was studied in 20 patients with and 28without (controls) a history of atrial fibrillation and/or flutter. Twelve-lead electrocardiograms were recorded during pacing from the high right atrium (RA), from the distal coronary sinus (LA), and biatrial pacing. P waveduration was measured in each lead and the difference between maximum and minimum P duration was termed P wave dispersion. Effective refractory periods (ERPs) were measured during each pacing mode. The dispersion of P wave duration was 35 +/- 14 ms in controls and 40 +/- 29 ms in AF patients (P = 0.17). Compared to RA pacing, LA pacing shortened P duration in controls (127 +/- 28 to 107 +/- 16 ms, P < 0.05) and biatrial pacing markedly shortenedP duration in controls (127 +/- 28 to 93 +/- 14 ms, P < 0.05) and AF patients (114 +/- 43 to 97 +/- 21 ms, P < 0.05). P wave dispersion rs as unaffected. In controls, the LA ERP was longer than the RA ERP. This phenomenon was not present in AF patients, whose LA ERP was shorter than that of controls. Biatrial pacing had no effect on atrial ERPs or the dispersion of atrialrefractoriness. In conclusion, acute biatrial pacing does not affect atrial repolarization but it does cause a marked shortening of global biatrial depolarization. Distal coronary sinus pacing produces a shorter P wave than RA pacing. There is substantial dispersion in the surface P wave of the electrocardiogram, the significance of which awaits further study.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/10/20 alle ore 03:05:32