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. 2017;3(1):55.
doi: 10.1186/s40981-017-0125-2. Epub 2017 Oct 4.

Perioperative risk factors for acute kidney injury after off-pump coronary artery bypass grafting: a retrospective study

Yuta Kumada  1 , Kenji Yoshitani  1 , Yusuke Shimabara  2 , Yoshihiko Ohnishi  1
Affiliations

Perioperative risk factors for acute kidney injury after off-pump coronary artery bypass grafting: a retrospective study

Yuta Kumada et al. JA Clin Rep. 2017.

Abstract

Background: Acute kidney injury (AKI) after cardiac surgery is associated with increased morbidity and mortality. Although morbidity of AKI after off-pump coronary artery bypass grafting (OPCAB) has been investigated, little is known about risk factors for AKI after OPCAB. To identify risk factors for AKI, we examined the association between perioperative variables and AKI after OPCAB.

Findings: We reviewed the medical records of consecutive adult patients who underwent isolated OPCAB between January 2010 and February 2013 in a single institute, retrospectively. The primary outcome was the incidence of AKI evaluated using Acute Kidney Injury Network classifications during the first 48 h postoperatively. We investigated preoperative and intraoperative variables, including hemodynamic parameters, as potential risk factors for AKI. The relationship between candidates of AKI and incidence of AKI was examined by multivariate logistic regression analysis.A total of 298 patients were enrolled in this study. Acute kidney injury occurred in 47 patients (15.7%). Multivariate logistic regression analysis showed that intraoperative furosemide administration (odds ratio [OR], 5.163; 95% confidence interval, 2.171 to 12.185; P < 0.001] and diabetes mellitus (OR, 1.954; 95% confidence interval, 1.004 to 3.880; P = 0.049) were significantly associated with AKI.

Conclusions: Intraoperative furosemide administration and diabetes mellitus were significantly associated with AKI in patients who had received OPCAB.

Keywords: AKI; Acute kidney injury; Furosemide; Off-pump coronary artery bypass grafting.

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Conflict of interest statement

This study was approved by the institutional review board of National Cerebral and Cardiovascular Center, Suita, Japan in June 2013 (Approval number: M25-025). The requirement for written informed consent was waived by the institutional review board.The authors declare that they have no competing interests.Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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