Relative efficiency of two warming devices during laparoscopic cholecystectomy

Area of Science:

• Anesthesiology
• Medical Devices
• Patient Safety

Background:

• Intraoperative hypothermia is a common risk during general anesthesia.
• Forced air warming is standard, but radiant warming device efficacy is less understood.
• Previous studies comparing warming devices have yielded conflicting results.

Purpose of the Study:

• To compare the efficacy of forced air warming (Warm-touch) versus radiant warming (Sun-touch) devices.
• To evaluate intraoperative temperature management during elective laparoscopic cholecystectomy.
• To assess postoperative side effects associated with each warming method.

Main Methods:

• A randomized trial involving 29 patients undergoing laparoscopic cholecystectomy.
• Patients were assigned to either a forced air (Warm-touch) or radiant (Sun-touch) warming device.
• Oesophageal temperature was monitored every 15 minutes; statistical analysis used a linear mixed model.

Main Results:

• No significant difference in oesophageal temperature between the Warm-touch and Sun-touch groups over time.
• Both devices maintained normothermia effectively during the procedure (median surgery time: 90 minutes).
• Significantly more patients in the Sun-touch group reported postoperative headaches (P=0.04).

Conclusions:

• The Sun-touch radiant warming device demonstrated comparable efficacy to the Warm-touch forced air device in preventing intraoperative hypothermia.
• Radiant warming devices may be associated with an increased incidence of postoperative headaches.
• Operational side effects could limit the clinical utility of radiant warming devices.