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Background and purpose: Acute renal failure after cardiac surgery is a dangerous condition that ‎increases mortality and hospital costs. The present study aimed to evaluate the prevalence and associated ‎factors of acute renal failure in patients with open-heart surgery in Sari 2012.‎ Materials and methods: This cross-sectional study with available data was performed on 250 patients ‎who referred to cardiac surgery department in Fatima Zahra Hospital, Sari, Iran from April to March 2012. ‎Creatinine levels, before and 3 days after surgery and associated factors, were collected using demographic ‎and medical data list. After data collection their analysis was performed using Chi-square test, Mann-Whitney ‎and t-test.‎ Results: In this study, 58.8% of the patients were males and 41.2% were females. The mean age of ‎subjects was 60.75 ± 9.87. The most commonly associated disease was hypertension. The prevalence of renal ‎failure was 15% (in the first 48 hours after surgery). Results showed that age, history of hypertension and the ‎amount of intra operative blood transfusion have been correlated with acute renal failure.‎ Conclusion: In this study, acute renal failure after open-heart surgery was 15%. This disorder can ‎cause problems for patients and their family and rise health care costs. The recognition of risk factors and ‎treatments are keys to reduce adverse outcomes.‎

Keywords: Cardiac surgery, Acute renal failure, Risk factors

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