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  • Title: Mortality risk factors in chronic renal failure patients after coronary artery bypass grafting.
    Author: Akman B, Bilgic A, Sasak G, Sezer S, Sezgin A, Arat Z, Ozdemir FN, Haberal M.
    Journal: Ren Fail; 2007; 29(7):823-8. PubMed ID: 17994450.
    Abstract:
    Perioperative risk during coronary artery bypass grafting (CABG) is high in patients with chronic renal disease. We aimed to determine postoperative two-year mortality and identify the preoperative risk factors of mortality during CABG surgery in hemodialysis (HD)-dependent and HD-non-dependent CRF patients. We included 102 CRF patients who underwent CABG in Baskent University Hospital between 2000 and 2005. There were 47 patients with CRF undergoing HD (Group I) and 55 CRF patients without dialysis requirement (Group II). We retrospectively retrieved demographic variables; clinical, operative, and echocardiographic data; and biochemical parameters at the time of the operation and six months postoperation. Postoperative HD requirement in Group II patients and infectious complications were recorded. In the second postoperative year, mortality rate was 27.7% in group I and 16.4% in group II (p > .05). When preoperative risk factors evaluated by univariate Cox analysis, only age (RR = 1.06, p = .04) was a significant determinant of survival in Group I patients. Among the operative and postoperative risk factors of mortality such as duration of operation, numbers of coronary vessel bypass, HD requirement, and infection were investigated in Group I and II patients. Rate of infectious complication (including mediastinitis) was found to be a major determinant of mortality by multivariate Cox analyses in both group I (RR = 4.42, p <or= .05) and group II (RR = 9.39, p <or= .05). HD dependency did not increase mortality if the patients are younger and were electively prepared for CABG surgery. High infection rates have increased the postoperative mortality and hospitalization in CRF patients. Early diagnosis of infections in CRF patients is important for early recovery, shorter hospitalization, and lower mortality after CABG operation.
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