Report of a substudy on warm versus cold cardiopulmonary bypass: changes in creatinine clearance.


Journal Article

BACKGROUND: Renal dysfunction remains a major complication of cardiac operations. There is concern regarding the possibility of increased renal injury during warm cardiopulmonary bypass (CPB). Therefore, we tested the hypothesis that warm CPB is associated with a greater reduction in creatinine clearance after cardiac surgery than hypothermic CPB. METHODS: We randomly assigned 300 patients who had elective coronary artery bypass grafting to warm (35.5 to 36.5 degrees C) or cold (28 degrees C to 30 degrees C) CPB. Preoperative and peak postoperative serum creatinine values were recorded. Creatinine clearance was estimated using the Cockroft Gault equation. Univariate and multivariable analyses were performed to test the association of CPB temperature and perioperative change in creatinine clearance. RESULTS: Demographic variables were similar between groups. Multivariable analysis did not confirm an association between temperature and change in creatinine clearance (p = 0.87). CONCLUSIONS: We did not confirm an association between warm CPB and increased renal dysfunction after cardiac operations compared with hypothermic CPB.

Full Text

Duke Authors

Cited Authors

  • Swaminathan, M; East, C; Phillips-Bute, B; Newman, MF; Reves, JG; Smith, PK; Stafford-Smith, M

Published Date

  • November 2001

Published In

Volume / Issue

  • 72 / 5

Start / End Page

  • 1603 - 1609

PubMed ID

  • 11722052

Pubmed Central ID

  • 11722052

International Standard Serial Number (ISSN)

  • 0003-4975

Digital Object Identifier (DOI)

  • 10.1016/s0003-4975(01)03223-4


  • eng

Conference Location

  • Netherlands