The purpose of this study is to see if the combination of a circulating water mattress
beneath the patient combined with forced air warming over top of the patient will prevent
hypothermia (low body temperature) just as well as a garment that circulates warm water
around the patient, during your major abdominal surgery. Patients will be randomly assigned
to one of these two groups.
Group A: This group will receive the circulating water garment Group B: This group will
receive the circulating water mattress and be covered by a forced air warming device for
both the upper body and lower body
Once the patient is moved to the operating room table, the surface of the back will begin to
be warmed using either the circulating-water garment for those in Group A or the
circulating-water mattress for those in Group B. Following the start of anesthesia,
additional warming will be done by covering the large parts of the legs and the upper and
side of the chest using either the circulating-water garment for those in Group A or upper-
and lower-body forced-air warmers for those in Group B.
Patient involvement will last until the warming devices are removed prior to departure from
the operating room. There is no follow-up to this study.
- MaJor abdominal surgery
- Age between 18 and 85 years.
- Fever (core temperature >38°C)
- Combined procedures (e.g.: simultaneous liver and kidney transplantation)
- Contraindication to forced-air or circulating-water warming which would be impacted
by use of warming blanket
- Anticipated veno-venous bypass
- Current Pregnancy