目的 觀察右美托咪啶復合舒芬太尼用于經腹子宮全切術后患者自控靜脈鎮痛（PCIA）的效果。 方法 2011年3月－2012年6月選擇經腹子宮全切術患者90例，年齡39～68歲，體重48～72 kg，美國麻醉醫師協會分級Ⅰ～Ⅱ級。采用隨機數字表法，將患者隨機分為3組，每組各30例。于手術結束即刻行PCIA。對照組（C組）采用舒芬太尼150 μg+昂丹司瓊12 mg；S1組采用右美托咪定200 μg+舒芬太尼100 μg+昂丹司瓊12 mg；S2組采用右美托咪定200 μg+舒芬太尼150 μg+昂丹司瓊12 mg。3組均用生理鹽水稀釋至100 mL，負荷劑量均為舒芬太尼0.1 μg/kg，靜脈鎮痛泵背景輸注速度2 mL/h，自控給藥劑量0.5 mL，鎖定時間15 min。記錄術后6、12、24和48 h Ramsay鎮靜評分和視覺模擬評分（VAS），記錄不良反應發生情況和患者對術后鎮痛的滿意度。 結果 3組患者均能獲得較好的鎮痛效果。其中C組VAS評分較低，但惡心、嘔吐、皮膚瘙癢發生率升高；與C組相比，Sl組和S2組Ramsay鎮靜評分升高，惡心、嘔吐、皮膚瘙癢發生率降低，患者滿意度升高。S1組患者滿意度最高；S2組VAS評分最低。3組均未發生心動過緩、低血壓、過度鎮靜和呼吸抑制。 結論 右美托咪啶可增加經腹子宮全切術患者術后舒芬太尼自控靜脈鎮痛的效果，提高患者滿意度，降低不良反應。
Objective To investigate the effects of different ventilation modes on postoperative pulmonary complications in elderly patients undergoing abdominal surgery. Methods The patients who underwent upper abdominal surgery under general anesthesia in Chengdu Office Hospital of the People’s Government of Tibet Autonomous Region between February 2020 and February 2021 were selected. Patients were randomly divided into volume controlled ventilation (VCV) group, pressure controlled ventilation (PCV) group, and pressure controlled ventilation-volume guarantee (PCV-VG) group according to the random number table method. All the three groups adopted the internationally recognized lung protective ventilation strategy. The transcutaneous arterial oxygen saturation and respiratory mechanics indicators of three different time periods, as well as pulmonary symptoms and signs and laboratory imaging examinations 7 days after surgery were recorded. The incidence of postoperative pulmonary complications in the three groups of patients were evaluated using the Melbourne Group Scale Version 2. Results A total of 120 patients were included, with 40 in each group. There was no statistically significant difference in the general situation of the three groups of patients (P>0.05). The platform pressure and compliance of three different time periods all changed over time (P<0.05). There were statistically significant differences in the occurrence of pulmonary complications and hospital stay among the three groups 7 days after surgery (P<0.05). Conclusion Under the internationally recognized lung protective ventilation strategy, PCV-VG mode can significantly reduce the incidence of pulmonary complications 7 days after abdominal surgery, shorten the length of hospital stay, and improve the quality of life in elderly patients.