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A reusable, custom-made warming blanket prevents core hypothermia during major neonatal surgery

[Une couverture chauffante réutilisable, faite sur mesure, prévient l'hypothermie centrale pendant une intervention chirurgicale néonatale importante]

Suneerat Kongsayreepong, MD^*, Panidaporn Gunnaleka, RN BSC, Suwannee Suraseranivongse, MD MSC^*, Sangsom Pirayavaraporn, MD^*, Sumitra Chowvanayotin, MD^*, Thunyanit Montapaneewat, RN BSC^* and Chitprapa Manon, RN BSC^*

^* From the Department of Anesthesiology, and
the Department Of Surgical Nursing, Siriraj Hospital, Faculty of Medicine Mahidol University, Bangkok Thailand.

Address correspondence to: Dr. Suneerat Kongsayreepong, Department of Anesthesiology, Siriraj Hospital, Faculty of Medicine, Mahidol University, Bangkok-10700, Thailand, Phone: 02-222-1602; Fax: 02-222-3657; E-mail: sisko{at}mahidol.ac.th

Purpose: To introduce a reusable model of neonatal forced air warming blanket for intraoperative use during major noncardiac neonatal surgery and to determine clinical efficacy of this reusable blanket compared with the commonly used disposable blankets.

Methods: Delivered air temperature and calorie uptake of standard thermal bodies within the reusable blankets, Bair Hugger® blanket model 530 and model 555 were studied. Also, an efficacy study was conducted in 90 neonatal patients scheduled for major noncardiac surgery comparing the reusable blanket, the Bair Hugger® blanket model 530 and passive heat conservation as a control. The covered reusable blanket was used as a rescue procedure if the core temperature was < 35.5°C.

Results: Delivered air temperature and heat transfer from the covered reusable blanket did not differ significantly from those of the Bair Hugger® blanket model 530 and model 555 (despite 0.75°C–1.2°C of heat trapped under the sheet and 1.3 Kcal less energy transfer). Temperatures measured underneath patients (correlated to poorly perfused areas) were highest using the Bair Hugger® blanket model 555. The reusable blanket was efficacious in preventing intraoperative core hypothermia and not different from the Bair Hugger® blanket model 530. About 1/3 of the patients in the control group had presented a core temperature < 35.5°C but were successfully rescued using the reusable blanket. No adverse events were associated with any of these warming methods.

Conclusion: This study shows the clinical efficacy of our reusable blanket for the prevention of core hypothermia during major neonatal surgery, which is not different from commonly used disposable blankets.