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Warmed humidified inspired oxygen accelerates postoperative rewarming.
S M Frank1, T W Hesel, H K El-Rahmany
1Department of Anesthesiology and Critical Care Medicine, The Johns Hopkins Medical Institutions, Baltimore, MD 21287, USA. sfrank@welch.jhu.edu
Journal of Clinical Anesthesia
|August 26, 2000
Summary
Warmed, humidified oxygen therapy improved rewarming rates and reduced dry mouth in postoperative patients. This intervention effectively hastens recovery from mild hypothermia after surgery.
Area of Science:
- Anesthesiology
- Postoperative Care
- Thermoregulation
Background:
- Postoperative hypothermia is a common complication.
- Mild hypothermia can delay patient recovery.
- Standard oxygen therapy may not adequately address hypothermia.
Purpose of the Study:
- To evaluate the effectiveness of warmed, humidified inspired oxygen (O(2)) in treating mild hypothermia in postoperative patients.
- To compare rewarming rates and incidence of dry mouth and shivering between standard and treated oxygen groups.
Main Methods:
- Prospective, randomized, unblinded clinical trial involving 30 patients.
- Patients received either routine O(2) or warmed (42°C) humidified O(2) for 90 minutes postoperatively.
- Core temperature, dry mouth, and shivering were measured.
Main Results:
- Rewarming rates were significantly higher in the warmed, humidified O(2) group (0.7°C/hr) compared to the control group (0.4°C/hr).
- The incidence of dry mouth was significantly lower in the treatment group.
- Shivering incidence was low and similar between groups.
Conclusions:
- Warmed, humidified inspired oxygen accelerates recovery from postoperative hypothermia.
- This therapy offers a potential benefit in improving patient comfort by reducing dry mouth.