Key result
Age (OR 0.921) and preoperative E/A ratio (OR 0.161) were identified as independent predictors of postoperative atrial fibrillation following off-pump coronary artery bypass grafting.
Why the study?
What are the preoperative risk factors for postoperative atrial fibrillation in patients undergoing off-pump CABG?
Observational (n=142)
No
What are the preoperative risk factors for postoperative atrial fibrillation in patients undergoing off-pump CABG?
Odds Ratio: 0.921 (95% CI 0.856–0.99)
p-value: p=0.0265
Age and preoperative E/A ratio are independent predictors of postoperative atrial fibrillation following off-pump CABG, an event associated with significantly prolonged hospital stays.
May support preoperative POAF risk stratification by age and E/A ratio after off-pump CABG; hypothesis-generating and requires prospective validation.
今回我々は虚血性心疾患に対し心拍動下冠動脈バイパス術(off-pump CABG)を施行した症例を対象とし,術後心房細動の発症について検討した.2008年4月から2009年12月まで虚血性心疾患に対し当科で施行したoff-pump CABG 166例のうち心房細動の既往のある症例,緊急症例などを除いた142例を検討の対象とした.性別は男性111例,女性31例,平均年齢67歳(33~83歳)であった.術後心房細動の発症における術前因子について,バイパス枝数,右冠動脈病変,手術時間,合併疾患(高血圧・糖尿病・腎機能障害),左房負荷所見,左房径,左室拡張末期径,左室収縮末期径,左室流入速波形(早期流入波/心房収縮波:E/A比),左室早期流入波減速時間,肺高血圧,左室駆出分画,術前内服薬(β遮断薬,アンジオテンシン変換酵素阻害薬,スタチン系),を検討した.術後心房細動を発症した症例は21例(15%)で平均年齢は68歳であり,発症のない症例は121例(85%)で平均年齢は66歳であった.多変量解析では年齢およびE/A比が術後心房細動の発症に有意に影響を与えることが示された.また,心房細動発生例では有意に術後在院日数が長かった.
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Shiraishi et al. (2011) conducted an observational in Ischemic heart disease requiring off-pump coronary artery bypass grafting (n=142). Age was evaluated on Postoperative atrial fibrillation (OR 0.921, 95% CI 0.856-0.990, p=0.0265). Age (OR 0.921) and preoperative E/A ratio (OR 0.161) were identified as independent predictors of postoperative atrial fibrillation following off-pump coronary artery bypass grafting.
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