RISK-FACTORS FOR MILD INTRAOPERATIVE HYPOTHERMIA

In this study, the authors prospectively followed one-hundred thirty p atients undergoing surgery in order to investigate the influence of ag e, surgery time, surgical room temperature, major surgery, blood trans fusion, gender, and anesthetic method in the occurrence of mild intrao perative hypothermia (MIH). Sixty-one patients (47%) were female and 6 9 (53%) were male, and patient's mean age was 42 +/- 20 years. Fifty-t hree patients (41%) developed MIH. Fifty-two (40 %) underwent major su rgery, 65 (50%) patients were scored as ASA I (American Society Anesth esia), 52 (40%), ASA II and 13 (10%), ASA III or IV. Sixty-four (49.2% ) received balanced general anesthesia, 22 (17%), spinal lumbar anesth esia, 20 (15.3%), epidural lumbar anesthesia and 24 (18.5%), miscellan eous anesthesia. Thirteen (10%) received blood transfusion, mean surge ry time was 83 +/- 59 min and mean surgical room temperature was 22.9 +/- 1.2 degrees C. Regression logistic with backward elimination metho d was employed to determine the impact of all variables over developme nt of MIH. Only major surgery (Odds Ratio 2.8) and blood transfusion ( Odds Ratio 6.7) were identified as risk factors for MIH.