Cardiopulmonary Support and Physiology Thermo-wrap technology preserves normothermia better than routine thermal care in patients undergoing off-pump coronary artery bypass and is associated with lower immune response and lesser myocardial damage

Results: The mean temperature of the patients in the Allon thermoregulation system group (AT group) was significantly (P .005) higher than that of the patients receiving routine thermal care (the RTC group); less than 40% of the latter reached 36°C compared with 100% of the former. The cardiac index was higher and the systemic vascular resistance was lower (P .05) by 16% and 25%, respectively, in the individuals in the AT group compared with in the individuals in the RTC group during the 4 postoperative hours. End-of-surgery interleukin 6 levels and 24-hour postoperative troponin I levels were significantly (P .01) lower in the patients in the AT group than in the RTC group. The RTC group’s troponin levels closely correlated with their interleukin 6 levels at the end of the operation (R 0.51, P .002).