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European Heart Journal 2002 23(19):1522-1528; doi:10.1053/euhj.2002.3167
Copyright © 2002 by the European Society of Cardiology.
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Success of serial external electrical cardioversion of persistent atrial fibrillation in maintaining sinus rhythm. A randomized study

E. Bertagliaa,f1, D. D'Estea, F. Zerboa, F. Zoppoa, P. Deliseb and P. Pascottoa

a Dipartimento di Cardiologia, Ospedale Civile, Mirano, Venice, Italy
b Unità Operativa di Cardiologia, Ospedale Civile, Conegliano, Treviso, Italy

revised January 4, 2002; accepted January 8, 2002

Abstract

Aims The aim of this prospective, randomized study was to determine the efficacy of a serial external electrical cardioversion strategy in maintaining sinus rhythm after 12 months in patients with recurrent persistent atrial fibrillation.

Methods and Results Ninety patients with persistent atrial fibrillation lasting more than 72h but less than 1 year were randomized in a one to one fashion to repetition of up to two electrical cardioversions in the event of relapse of atrial fibrillation detected within 1 month of the previous electrical cardioversion (Group AGG), or to non-treatment of atrial fibrillation relapse (Group CTL). ECGs were scheduled at 6h, 7 days, and 1 month. Clinical examination and ECGs were repeated during the 6-month and 12-month follow-up examinations. Echocardiography was repeated during the 6-month follow-up examination. Clinical and echocardiographic characteristics were similar in the two groups. All patients were treated with antiarrhythmic drugs before electrical cardioversion and throughout follow-up. After 12 months, sinus rhythm was maintained in 53% of Group AGG patients and in 29% of Group CTL patients (P<0·03). After 6 months, left ventricular ejection fraction had recovered significantly only in Group AGG (56·8±9·0% at enrolment vs 60·4±9·4% at 6 months,P <0·001).

Conclusion These results demonstrate that an aggressive policy towards persistent atrial fibrillation by means of repetition of electrical cardioversion after early atrial fibrillation recurrence is useful in maintaining sinus rhythm after 12 months. Copyright 2002 The European Society of Cardiology. Published by Elsevier Science Ltd. All rights reserved.

Key Words: Atrial fibrillation • electrical cardioversion

f1 Correspondence: Emanuele Bertaglia, Via Ca'Rossa, 35, 30173 Mestre, Venice, Italy.

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