[Effect of long-term sevoflurane anesthesia on markers of myocardial damage].

ABSTRACT

OBJECTIVE: To investigate the effect of long-term sevoflurane anesthesia on markers of myocardial damage or toxicity. METHODS: Forty adult patients scheduled for upper abdominal surgery with general anesthesia for 4 hours or more were randomly divided into Group S and PR (n=20 each). After anesthesia induction, patients of Group S were maintained with only sevoflurane, and patients of Group PR with target-controlled infusion of propofol 2-4 microg/ml and remifentanil 4-8 ng/ml. Anesthesia was titrated to control blood pressure and heart rate change at less than 20 percent of baseline values. Blood samples were draw at pre-induction, 4 h and 24 h post-induction respectively. Serum level of cardiac troponin I, creatine kinase MB and myoglobin were analyzed. RESULTS: There were no significant changes of troponin I, creatine kinase MB and myoglobin in Group S between pre-induction and 4 h or 24 h post-induction (P > 0.05). And there was also no significant differences as compared with Group PR (P > 0.05). CONCLUSION: At the concentration range of 1.6%-3%, long-term sevoflurane anesthesia does not cause detectable changes of markers of myocardial damage or toxicity.