Use of Space Blanket for Reducing the Incidence of Postanesthetic Shivering
Keywords:
space blanket, incidence, postanesthetic shiveringAbstract
Objective: Postanesthetic shivering is a common complication of anesthesia. Shivering is usually triggered by hypothermia. Shivering is believed to increase oxygen consumption, increase the postoperative complication. The combination of force-air warming devices, warmed intravenous fluid and medications are provided. However, the gold standard for the treatment and prevention has not been defined yet, and the overall quality of anti-shivering guideline is low. Some study found the space blanket used pre-emptively can reduce the incidence of postanesthetics shivering, but not common use in Thailand. Our study interested to examine the effectiveness of space blanket use for reduces the incidence of post-anesthetic shivering.
Methods: This study was a randomized controlled trial, collected data from the medical and anesthetic records from 1st September 2020 to 31st October 2020. A total of 342 patients undergoing surgery under general or spinal anesthesia was allocated and randomized by computer equally, n = 171 in each groups, into the space blanket group and control group. Both groups were treated as standard e.g. force air warming devices, warmed intravenous fluid and medication. The data were collected in demographic data surgical data and anesthetic data, analyzed using frequency, percentage, mean, standard deviation, independent t test, and chi-square with 95% confidence interval, reflected a significant level at .05.
Results: The overall incidence of postoperative shivering was 15 patients (4.4%). There were significantly less shivering in the space blanket group compared to the control group (3, 1.75% vs. 12, 7.01%), p=.017. The body temperatures were compared between two groups, 36.94 + 0.26 in the space blanket groups and 36.87 + 0.47 in control groups, higher body temperatures in the space blanket group was observed, significantly different (p=.008). There were no significantly differences in age, gender, ASA physical status, duration, blood loss between 2 groups.
Conclusion: We concluded that the use of space blanket helps decreases the incidence of postanesthetic shivering and results in higher body temperature.
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