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논문분류	춘계학술대회 초록집
제목	Preoperative anemia is a predictor of acute kidney injury and mortality after coronary artery bypass graft surgery
저자	Hyunjeong Cho1, Sejoong Kim2, Ho Jun Chin2, Hajeong Lee3, Dong Ki Kim3, Kook-Hwan Oh3, Kwon Wook Joo3, Yon Su Kim3, Ki Young Na3, Seung Seok Han3
출판정보	2018; 2018(1):
키워드	acute kidney injury \| anemia \| coronary artery bypass grafting \| hemoglobin \| mortality
초록	Objectives: Anemia is an important health concern regarding risks of several morbidities and mortality. Nevertheless, its relationships with kidney outcomes and a long-term mortality after coronary artery bypass grafting (CABG) remain unresolved. Methods: A total of 2,942 patients who underwent CABG at two tertiary referral hospitals between 2003 and 2015 were retrospectively reviewed. Patients were categorized by quartiles of preoperative hemoglobin (Hb) levels. Odds ratio (OR) for postoperative acute kidney injury (AKI) and hazard ratio (HR) for end-stage renal disease (ESRD) and all-cause mortality were calculated after adjustment of multiple covariates. Results: Mean preoperative Hb level was 13.0±1.8 g/dL. The prevalence of postoperative AKI were 34.6%, 25.6%, 21.4%, and 22.6% from 1st to 4th quartiles, respectively. The 1st quartile had higher ORs of AKI [2.1 (1.55–2.76) and ESRD [5.2 (1.06–25.39)] than the 4th quartile. During the mean follow-up period of 75 months, 755 patients (25.7%) died. The 1st quartile had a higher risk of mortality than the 4th quartile with a HR of [2.2 (1.57–2.97)]. Conclusions: Because preoperative anemia is associated with AKI, ESRD, and all-cause mortality, hemoglobin level should be monitored during the perioperative period of CABG.
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