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  • Title: Forced air warming and intraoperative hypothermia.
    Author: Lindwall R, Svensson H, Söderström S, Blomqvist H.
    Journal: Eur J Surg; 1998 Jan; 164(1):13-6. PubMed ID: 9537703.
    Abstract:
    OBJECTIVES: To compare a forced air warming system with passive measures to avoid perioperative hypothermia. DESIGN: Prospective open study. SETTING: University hospital, Sweden. SUBJECTS: 28 Patients scheduled for extensive thoracoabdominal operations under standard combined general and regional anaesthesia. MAIN OUTCOME MEASURES: Temperature measured before, repeatedly under anaesthesia and during the operation for up to three hours, and then up to eight hours postoperatively. RESULTS: Three patients were excluded. In the 12 patients who had forced air warming, temperature was preserved, and ranged from a mean (SD) of 36.8 (0.7) degrees C, (95% confidence interval (CI) 36.4 to 37.2) at the start to 36.9 (0.8) degrees C, (95% CI 36.5 to 37.3) after 3 hours. In patients who had conservative passive heat preservation techniques the mean temperature fell significantly perioperatively, from 36.8 (0.6) degrees C (95% CI 36.5 to 37.1) at the start to 35.1 (0.5) degrees C, (95% CI 34.9 to 35.3), after three hours of anaesthesia and surgery. This was a significant fall compared with the temperature in the study group (p < 0.001). CONCLUSION: Forced air warming intraoperatively can preserve normothermia during extensive thoracoabdominal operations.
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