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Year : 2018  |  Volume : 5  |  Issue : 2  |  Page : 103-109

Renal dysfunction after coronary artery bypass surgery

1 Department of Cardiothoracic Surgery, Faculty of Medicine, Alexandria University, Alexandria, Egypt
2 Department of Surgery, Faculty of Medicine, Alexandria University, Alexandria, Egypt

Correspondence Address:
Eisa A.A Aly
Victoria, Alexandria, 21628
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/roaic.roaic_46_17

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Background Renal dysfunction or acute renal failure in patients undergoing coronary artery bypass grafting (CABG) is one of the most important causes of morbidity and mortality. The great effect of acute renal dysfunction in the outcomes of CABG surgery demands its study in our population, encouraging to the elaboration of this study, which aimed to identify the incidence and risk factors of renal dysfunction after CABG. Patients and methods Since January 2013 to December 2014, 290 patients were studied who underwent CABG with preoperative normal renal function. In this cross-sectional study, patients were divided into two groups based on the occurrence of renal dysfunction after CABG, and measured variables were compared between the two groups and statistically analyzed. P value less than 0.05 was set as a significant level. Results Renal dysfunction was seen in ∼21.37% of patients after CABG. The mean age of renal dysfunction group was higher than that in the other group, and the difference was significant between the two groups. Moreover, reduced ejection fraction was significantly different between the two groups. Cardiopulmonary bypass time was also statistically significant. Postoperative hemodynamic instability and postoperative bleeding were also statistically significant. Conclusion Our study showed older patients were more prone to acute renal failure. Conditions that affect renal perfusion as reduced ejection fraction, hemodynamic instability, and postoperative bleeding are associated with increased risk of renal dysfunction.

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