25 September 2018
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Int J Med Sci 2017; 14(8):791-797. doi:10.7150/ijms.19318
The effect of humidified heated breathing circuit on core body temperature in perioperative hypothermia during thyroid surgery
1. Department of Anesthesiology and Pain Medicine, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
Purpose: During general anesthesia, human body easily reaches a hypothermic state, which is mainly caused by heat redistribution. Most studies suggested that humidified heated breathing circuits (HHBC) have little influence on maintenance of the core temperature during early phase of anesthesia. This study was aimed at examining heat preservation effect with HHBC in case of undergoing surgery with less exposure of surgical fields and short surgical duration.
Methods: Patients aged 19 to 70 yr - old, ASA-PS I or II who were scheduled for elective thyroidectomy were assigned and divided to the group using HHBC (G1) and the group using conventional circuit (G2) by random allocation. During operation, core, skin, and room temperatures were measured every 5minutes by specific thermometer.
Results: G1 was decreased by a lesser extent than G2 in core temperature, apparently higher at 30 and 60 minutes after induction. Skin and room temperatures showed no differences between the two groups (p>0.05). Consequently, we confirmed HHBC efficiently prevented a decrease in core temperature during early period in small operation which has difficulty in preparing warming devices or environments were not usually considered.
Conclusions: This study showed that HHBC influences heat redistribution in early period of operation and can lessen the magnitude of the decrease in core body temperature. Therefore, it can be applied efficiently for other active warming devices in mild hypothermia.
Keywords: Body Temperature, Circuit, Hypothermia, Thyroidectomy
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How to cite this article:
Park HJ, Moon HS, Moon SH, Do Jeong H, Jeon YJ, Do Han K, Koh HJ. The effect of humidified heated breathing circuit on core body temperature in perioperative hypothermia during thyroid surgery. Int J Med Sci 2017; 14(8):791-797. doi:10.7150/ijms.19318. Available from http://www.medsci.org/v14p0791.htm