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胸部外科
Abstract
Postoperative atrial fibrillation(Af)remains a significant source of morbidity after coronary artery bypass grafting(CABG). Prophylactic therapy with β-adrenergic blockers or amiodarone hydrochloride is reported to reduce the incidence of Af. We studied the incidence of Af retrospectively and considered the risk factors for it. Ninety-three patients who underwent isolated CABG from April 2003to March 2004are included in this study. Postoperative Af was observed in 22(25%)patients. Ten of them were operated on off-pump procedure, and 14had any type of β-adrenergic blockers preoperatively. The mean age of the group of postoperative Af is 69.7±9.2years old(older than the non-Af group:65.5±10years old,p=0.087). And the preoperative left atrial size was larger in the Af group than in the non-Af group(43.4±6.1versus 40.6±5.4mm, p=0.064)Major embolic complication occurred in only 1(1.1%)patient of non-Af group. We observed postoperative Af in 25% of patients after CABG. Older age and larger left atrial size may relate to the incidence of Af,and appropriate anticoagulant therapy and medication of β-blockers are important for the patients who have such risk factors.
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