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  • Title: [Atrial fibrillation after isolated coronary bypass surgery].
    Author: Shingu Y, Aoki H, Oba J, Takigami K, Eya K, Ebuoka N.
    Journal: Kyobu Geka; 2005 Aug; 58(9):807-11. PubMed ID: 16104567.
    Abstract:
    Postoperative atrial fibrillation (Af) remains a significant source of morbidity after coronary artery bypass grafting (CABG). Prophylactic therapy with beta-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 2003 to March 2004 are included in this study. Postoperative Af was observed in 22 (25%) patients. Ten of them were operated on off-pump procedure, and 14 had any type of beta-adrenergic blockers preoperatively. The mean age of the group of postoperative Af is 69.7 +/- 9.2 years old (older than the non-Af group: 65.5 +/- 10 years old, p = 0.087). And the preoperative left atrial size was larger in the Af group than in the non-Af group (43.4 +/- 6.1 versus 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 beta-blockers are important for the patients who have such risk factors.
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