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Titolo:
AMIODARONE IN RESTORATION AND MAINTENANCE OF SINUS RHYTHM IN PATIENTSWITH CHRONIC ATRIAL-FIBRILLATION AFTER UNSUCCESSFUL DIRECT-CURRENT CARDIOVERSION
Autore:
OPOLSKI G; STANISLAWSKA J; GORECKI A; SWIECICKA G; TORBICKI A; KRASKA T;
Indirizzi:
MED ACAD WARSAW,DEPT CARDIOL,BANACHA STR 1A PL-02097 WARSAW POLAND MED ACAD WARSAW,DEPT HYPERTENS & ANGIOL PL-02097 WARSAW POLAND
Titolo Testata:
Clinical cardiology
fascicolo: 4, volume: 20, anno: 1997,
pagine: 337 - 340
SICI:
0160-9289(1997)20:4<337:AIRAMO>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
LOW-DOSE AMIODARONE; ELECTRICAL CARDIOVERSION; QUINIDINE THERAPY; FLUTTER; CONVERSION; EFFICACY;
Keywords:
AMIODARONE; CHRONIC ATRIAL FIBRILLATION; REPEAT CARDIOVERSION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
16
Recensione:
Indirizzi per estratti:
Citazione:
G. Opolski et al., "AMIODARONE IN RESTORATION AND MAINTENANCE OF SINUS RHYTHM IN PATIENTSWITH CHRONIC ATRIAL-FIBRILLATION AFTER UNSUCCESSFUL DIRECT-CURRENT CARDIOVERSION", Clinical cardiology, 20(4), 1997, pp. 337-340

Abstract

Background: When direct-current (DC) cardioversion is used, sinus rhythm can be restored, at least temporarily, in 80-90% of patients with atrial fibrillation. However, there is a small but significant group of patients with chronic atrial fibrillation in whom DC cardioversion has failed to restore sinus rhythm. The value of antiarrhythmic drug pretreatment before DC cardioversion is still controversial. Hypothesis:The aim of our study was to assess (1) the effectiveness of repeat DCcardioversion in patients with chronic atrial fibrillation after pretreatment with amiodarone, and (2) the efficacy of amiodarone in maintaining sinus rhythm after repeat cardioversion. Methods: Forty-nine patients with chronic atrial fibrillation after ineffective DC cardioversion were included in the study. Repeat DC cardioversion was performed after loading with oral amiodarone, 10-15 mg/kg body weight/day for a period necessary to achieve the cumulative dose of over 6.0 g. Results: Spontaneous conversion to sinus rhythm during amiodarone pretreatment was achieved in 9 of 49 patients (18%). Direct-current cardioversionwas performed in 39 patients and sinus rhythm was achieved in 23 of these patients (59%). Mean heart rate decreased from 95 beats/min before to 68 beats/min after DC cardioversion (p < 0.001). Systolic blood pressure significantly (p < 0.05) decreased from 126 +/- 23 to 108 +/- 25 mmHg. Complications occurring in four patients just after electroconversion were well tolerated and of short duration. After 12 months, 52% of patients maintained sinus rhythm on low dose (200 mg/day) amiodarone therapy. Conclusion: Pretreatment with amiodarone and repeat DC cardioversion allows for restoration of sinus rhythm in about 65% of patients with chronic atrial fibrillation after first ineffective DC cardioversion. Direct-current cardioversion can be performed safely with the use of standard precautions in patients who are receiving amiodarone. At 12 months' followup, more than 50% of patients maintain sinus rhythm on low-dose amiodarone after successful repeat cardioversion.

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Documento generato il 07/04/20 alle ore 21:43:36