title: [Atrial fibrillation after isolated coronary bypass surgery].
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.
authors.affiliation: Department of Thoracic Surgery, Asahikawa City Hospital, Asahikawa, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Shingu
authors.forename: H
authors.initials: H
authors.lastname: Aoki
authors.forename: J
authors.initials: J
authors.lastname: Oba
authors.forename: K
authors.initials: K
authors.lastname: Takigami
authors.forename: K
authors.initials: K
authors.lastname: Eya
authors.forename: N
authors.initials: N
authors.lastname: Ebuoka
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use; D000368:Aged; D000638:Amiodarone / Q000627:therapeutic use; D000889:Anti-Arrhythmia Agents / Q000627:therapeutic use; D001281:Atrial Fibrillation / Q000209:etiology* / Q000517:prevention & control; D001026:Coronary Artery Bypass / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000517:prevention & control; D012189:Retrospective Studies; D012307:Risk Factors
chemical_list: D000319:Adrenergic beta-Antagonists; D000889:Anti-Arrhythmia Agents; D000638:Amiodarone