Risk factors for renal dysfunction after coronary surgery: the role of cardiopulmonary bypass technique

Perfusion. 1994;9(5):319-26. doi: 10.1177/026765919400900503.


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.

MeSH terms

  • Aged
  • Blood Transfusion
  • Cardiac Output, Low / etiology
  • Cardiopulmonary Bypass*
  • Coronary Vessels / surgery*
  • Hematocrit
  • Humans
  • Incidence
  • Intraoperative Complications
  • Kidney Diseases / epidemiology*
  • Middle Aged
  • Models, Cardiovascular
  • Prognosis
  • Risk Factors