Risk factors for renal dysfunction after coronary surgery: the role of cardiopulmonary bypass technique.
We studied 316 patients undergoing cardiopulmonary bypass for coronary artery surgery in order to determine perioperative risk factors for postoperative renal dysfunction. A preliminary univariate analysis was performed by chi 2 analysis for categorical data and Mann-Whitney U-test for continuous variables to detect significant correlations between each risk factor and the occurrence of moderate or severe renal dysfunction. Subsequently, a multiple logistic regression was applied to the three risk factors identified as predictive for severe renal dysfunction. Low cardiac output syndrome and need for banked blood transfusions combined with a low haematocrit value during cardiopulmonary bypass increase the probability of severe renal dysfunction in the postoperative course.
Department of Cardiovascular Anaesthesiology, S Donato Hospital, University of Milan, Italy.
M
M
Ranucci
M
M
Pavesi
E
E
Mazza
C
C
Bertucci
A
A
Frigiola
L
L
Menicanti
A
A
Ditta
A
A
Boncilli
D
D
Conti
D000368:Aged; D001803:Blood Transfusion; D002303:Cardiac Output, Low / Q000209:etiology; D002315:Cardiopulmonary Bypass; D003331:Coronary Vessels / Q000601:surgery*; D006400:Hematocrit; D006801:Humans; D015994:Incidence; D007431:Intraoperative Complications; D007674:Kidney Diseases / Q000453:epidemiology*; D008875:Middle Aged; D008955:Models, Cardiovascular; D011379:Prognosis; D012307:Risk Factors