Comparison of the WarmCloud and Under body Bair Hugger for maintaining core temperature during liver transplantation

Use of the Kanmed WarmCloud as an underbody intraoperative warming device. This differs from the comparator (Bair Hugger) which is also an underbody warming blanket in a couple of important ways. Firstly the Bair Hugger has holes in the blanket allowing convection currents to flow around the patient. The WarmCloud has no holes and lifts the patient up (Like a LiLo) relying more on conduction. In lifting the patient up it also provides a greater contact area (as the patient's weight on the BairHugger occludes some of the holes) and provides some pressure relief. The device is to be used for the entire duration of the surgery and will be set at 42 degrees. If core temperature hits 37.0 it will be reduced to 32 and if core temperature hits 37.5 it will be reduced to 22. The pressure settings will be start at 30 cm H2o and adjusted to weight.