ISSN : 1301-5680
e-ISSN : 2149-8156
Turkish Journal of Thoracic and Cardiovascular Surgery     
The reliability of estimated glomerular filtration rate in coronary artery bypass grafting
Ozan Onur Balkanay, Deniz Göksedef, Suat Nail Ömeroğlu, Gökhan İpek
Department of Cardiovascular Surgery, İstanbul University, Cerrahpaşa Medical Faculty, İstanbul, Turkey
DOI : 10.5606/tgkdc.dergisi.2016.12100
Background: In this study, we investigated the reliability of the estimated creatinine clearance and glomerular filtration rate in patients undergoing on-pump coronary artery bypass grafting.

Methods: A total of 167 patients (124 males, 43 females; mean age 60.9±9.4 years; range, 35 to 83 years) who underwent on-pump coronary artery bypass grafting in our clinic between January 2009 and January 2011 were enrolled in the study. Demographic characteristics of the patients, creatinine clearance rates measured with 24-hour urine collection, and estimated renal function, and glomerular filtration rates according to the formulas of Cockcroft-Gault, Modification of Diet in Renal Disease-four variables and six variables, Jelliffe-1972, Jelliffe-1973, Mawer, Bjornsson, and Gates of preoperative and postoperative first and fifthdays were retrospectively analyzed.

Results: Among all estimated renal function and glomerular filtration rate equations, the Cockcroft-Gault formula yielded the most significant results for the creatinine clearance rate for all periods.

Conclusion: Our study results suggest that the Cockcroft- Gault equation can be reliably used in the evaluation of kidney functions of patients undergoing coronary artery bypass grafting.

Keywords : Coronary artery bypass grafting; glomerular filtration rate; kidney function tests; reliability
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