Effect of Forced-Air Warming Blanket on Perioperative Hypothermia in Elderly Patients Undergoing Laparoscopic Radical Resection of Colorectal Cancer

Abstract

The study aimed to evaluate the effect of forced-air warming blanket combined with conventional thermal insulation measures on inadvertent perioperative hypothermia (IPH) in elderly patients undergoing laparoscopic radical resection of colorectal cancer. A total of 70 elderly patients undergoing laparoscopic radical resection of colorectal cancer with general anesthesia were included, and divided into conventional warming treatment (CT) group or forcedair warming treatment (FT) group. In the FT group, based on the conventional warming strategy, patients received prewarming with the forced-air warming blanket (38°C) for q20 minutes before induction of anesthesia, and received this treatment continuously during operation. The core body temperature, recovery time from anesthesia, extubating time, and length of stay in the postanesthesia care unit were recorded. The incidence of IPH and postoperative shivering was observed. The incidence of IPH was significantly lower, and average minimum body temperature during the operation was significantly higher in the FT group than that in the CT group (5.7% vs. 22.8% and 36.23°C vs. 35.89°C, respectively). The intraoperative body temperature decreased less (0.32°C vs. 0.69°C), the recovery time from anesthesia was faster (12.8 minutes vs. 17.1 minutes), and the incidence of postoperative shivering was less (2.8% vs. 28.6%) in the FT group than the CT group. In elderly patients undergoing laparoscopic radical resection of colorectal cancer, use of forced-air warming blankets combined with conventional warming measures is more effective to maintain normal body temperature during the perioperative period and reduce the incidence of IPH.

Effects of Thermal Insulation on Recovery and Comfort of Patients Undergoing Holmium Laser Lithotripsy

“…Furthermore, recovery times, including BIS recovery time, extubation time, fully awake time, and PACU retention time, were significantly reduced in the observation group. These results corroborate with previous findings suggesting that maintaining normothermia can prevent complications such as thrombocytopenia, prolonged bleeding, and delayed metabolism of anesthetic drugs, thereby enhancing postoperative recovery [ 7 , 19 ].…”

Effects of Different Forced-air Warming systems on the Core Temperature of Patients: A Manikin and Multi-center Clinical Study

“…Active warming systems were designed to transfer external heat to the patient's skin and peripheral tissues [12]. Several studies have widely discussed the application of forced-air warming (FAW) blanket perioperatively to prevent shivering and hypothermia in patients undergoing general or epidural anesthesia [13][14][15]. The systems of warming blanket differ substantially in the design of structure, material sources, manufacturing process, etc, which indicates that the potential for variation in performance characteristics.…”