Objective: To observe the clinical effect of lower limb warming blanket combined with dexmedetomidine (DEX) in preventing postoperative delirium (POD) and chills in elderly patients undergoing spinal surgery. Methods: A total of 160 elderly patients undergoing posterior spinal surgery under general anesthesia were selected and divided into control group (group N), heating group (group T), DEX group (group D) and heating combined with DEX group (group TD) according to the random number table method, 40 cases in each group. T group and TD group routine insulation and lower limb heating blanket. DEX was injected in group D and group TD. The dosage of anesthetics, the changes of body temperature and heart rate at different time points during operation, and the occurrence of postoperative chills and POD were compared among the groups.
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Intraoperative vital signs monitoring
Timeframe: 1 hour
Intraoperative vital signs monitoring
Timeframe: 2 hour
Intraoperative vital signs monitoring
Timeframe: 3 hour
The incidence of postoperative chills
Timeframe: 1 hour
The incidence of POD after operation
Timeframe: 1 day
Postoperative extubation time
Timeframe: 1 hour
Postoperative incision infection rate
Timeframe: 1 hour