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  • Title: Perfusion temperature during cardiopulmonary bypass does not affect serum S-100beta release.
    Author: Dworschak M, Lassnigg A, Tenze G, Zimpfer D, Czerny M, Grimm M, Schmid R, Grubhofer G.
    Journal: Thorac Cardiovasc Surg; 2004 Feb; 52(1):29-33. PubMed ID: 15002073.
    Abstract:
    BACKGROUND: The potentially harmful effects of normothermia on neurological outcome during cardiopulmonary bypass (CPB) are controversial. METHODS: In this study, we compared the early and late release patterns of S-100beta, a marker of cerebral injury, after normothermic and moderately hypothermic CPB. Forty-eight patients undergoing coronary artery bypass grafting were randomly assigned to either the normothermia (37 degrees C) or the hypothermia (32 degrees C) group. Serum S-100beta levels were measured until 24 h after CPB. Neurological examination was performed before and after surgery. RESULTS: With the exception of intraoperative blood glucose levels, there were no differences between groups. This also applied to peak S-100beta values (Gr-N: 3.5 +/- 1.9 microg/l; Gr-H: 3.5 +/- 3.4 microg/l) and values after 24 h (Gr-N: 0.32 +/- 0.16 microg/l; Gr-H: 0.35 +/- 0.28 microg/l). CONCLUSIONS: The similar pattern of S-100beta release without evident neurological complications in the normothermia group does not suggest an increase in cerebral injury during normothermic CPB.
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