Intraoperative administration of vasopressin during coronary artery bypass surgery is associated with acute postoperative kidney injury
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Background: Severe vasodilatation is commonly seen upon weaning from cardiopulmonary bypass (CPB). We examined the effects of vasopressin (arginine vasopressin [AVP]) on acute kidney injury (AKI) in postoperative period. Methods: The records of 483 patients undergoing coronary bypass surgery on CPB from 2004 to 2008 were retrospectively reviewed. Demographic, anthropometric, comorbid condition, and perioperative clinical/laboratory data were collected along with postoperative complications. Patients were grouped based on the perioperative use of AVP, and AKI was used as the primary end point. Univariate and multivariate logistic regression analyses were used, followed by propensity score matching for AKI. Null hypothesis was rejected at P < .05. Results: Postoperative AKI occurred in 14.5% of patients. Arginine vasopressin was administered to 280 patients during the perioperative period. The prevalence of AKI in AVP was 20%, whereas it was 6.1% in controls (P < .0001). Arginine vasopressin was an independent factor that predicted the occurrence of AKI (odds ratio, 3.60; 95% confidence interval, 1.22-10.62; P = .02). However, after propensity score matching, the association between AKI and AVP was lost (P = 073). Conclusion: Acute kidney injury is a common complication after cardiac surgery, and vasopressin use increases its incidence; however, this effect may rely on several clinical factors, and its true effect should be examined by large randomized trials. é 2015.
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