目的 观察右美托咪啶复合舒芬太尼用于经腹子宫全切术后患者自控静脉镇痛（PCIA）的效果。 方法 2011年3月－2012年6月选择经腹子宫全切术患者90例，年龄39～68岁，体重48～72 kg，美国麻醉医师协会分级Ⅰ～Ⅱ级。采用随机数字表法，将患者随机分为3组，每组各30例。于手术结束即刻行PCIA。对照组（C组）采用舒芬太尼150 μg+昂丹司琼12 mg；S1组采用右美托咪定200 μg+舒芬太尼100 μg+昂丹司琼12 mg；S2组采用右美托咪定200 μg+舒芬太尼150 μg+昂丹司琼12 mg。3组均用生理盐水稀释至100 mL，负荷剂量均为舒芬太尼0.1 μg/kg，静脉镇痛泵背景输注速度2 mL/h，自控给药剂量0.5 mL，锁定时间15 min。记录术后6、12、24和48 h Ramsay镇静评分和视觉模拟评分（VAS），记录不良反应发生情况和患者对术后镇痛的满意度。 结果 3组患者均能获得较好的镇痛效果。其中C组VAS评分较低，但恶心、呕吐、皮肤瘙痒发生率升高；与C组相比，Sl组和S2组Ramsay镇静评分升高，恶心、呕吐、皮肤瘙痒发生率降低，患者满意度升高。S1组患者满意度最高；S2组VAS评分最低。3组均未发生心动过缓、低血压、过度镇静和呼吸抑制。 结论 右美托咪啶可增加经腹子宫全切术患者术后舒芬太尼自控静脉镇痛的效果，提高患者满意度，降低不良反应。
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.