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Preventing inadvertent hypothermia: comparing two protocols for preoperative forced-air warming
Kerry-Anne Cobbe1, Renatta Di Staso, Jed Duff
1Day Surgery Unit, St. Vincent's Private Hospital, Sydney, NSW, Australia.
Summary
Preoperative forced-air warming protocols were compared. Starting with higher device temperatures was preferred by patients and appeared more favorable for preventing perioperative hypothermia.
Area of Science:
- Anesthesiology
- Perioperative Medicine
- Patient Comfort
Background:
- Inadvertent perioperative hypothermia is a risk during surgery.
- Effective and patient-accepted preoperative warming methods are needed.
- Limited evidence exists on optimal forced-air warming protocols.
Purpose of the Study:
- To compare two preoperative forced-air warming protocols.
- To assess patient preference and thermal comfort between protocols.
Main Methods:
- Pilot study with a crossover design (n=10).
- Two protocols: Protocol A (max temp, titrated down) vs. Protocol B (near body temp, titrated up).
- Measured device temperature, time at max settings, thermal comfort, core temperature, and sweating.
Main Results:
- Protocol A used higher mean device temperatures (43°C vs 41°C) and longer durations at maximum settings.
- No significant differences in thermal comfort, participant temperature, or sweating.
- Patients preferred Protocol A over Protocol B (70% vs 30%).
Conclusions:
- Initiating preoperative forced-air warming at higher device temperatures may be more favorable.
- Patient preference suggests higher initial settings are better tolerated.
- Further research is needed to confirm optimal warming strategies.
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