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Eur J Cardiothorac Surg 2002;21:401-405
© 2002 Elsevier Science NL
Department of Thoracic and Cardiovascular Surgery, Bayindir Hospital, 5. cad. No: 15/5 Bahcelievler, Ankara 06500, Turkey
Received 28 August 2001; received in revised form 31 October 2001; accepted 21 December 2001.
* Corresponding author. Tel.: +90-312-212-9571; fax: +90-312-284-1378
e-mail: tokmakoglu{at}isnet.net.tr
Objective: This prospective randomized study aims at evaluation and comparison of the prophylactic effects of amiodarone versus digoxin and metoprolol combination in postcoronary bypass atrial fibrillation. Methods: A total of 241 consecutive patients undergoing elective coronary artery bypass grafting were randomly allocated into three groups. Patients in Group1 (n=77) received metoprolol 100 mg/24 h per oral (P.O.), preoperatively, 2x0.5 mg digoxin intravenously on the operating day and digoxin 0.25 mg P.O.+metoprolol 100 mg P.O. on the first postoperative day until discharge. Patients in Group 2 (n=72) received totally 1200 mg intravenous/24 h amiodarone which the 300 mg – bolus dose/1 h was given as soon as the operation had been finished. On the next day patients were administered 450 mg/24 h amiodarone i.v. and 600 mg/day in three doses P.O. were given until discharge. Group 3 (n=92) was the control group with no antiarrhythmic prophylaxis. Results: Preoperative patient characteristics and operative parameters were similar in three groups. Atrial fibrillation occurred in 13 patients (16.8%) in Group 1, six patients (8.3%) in Group 2 and 31 patients (33.6%) in Group 3. Conclusion: Both study groups were effective in the prevention of postcoronary bypass atrial fibrillation with respect to control (P<0.01 in Group 1 and P<0.001 in Group 2).
Key Words: Coronary artery bypass grafting • Atrial fibrillation • Amiodarone
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