【摘要】 目的:探讨氧化亚氮（N₂O）吸入麻醉下行无痛人工流产的有效性与安全性。方法:门诊行人工流产术患者根据其意愿随机分为两组。实验组40例,采用50％的氧化亚氮吸入麻醉;对照组40例,不用任何药物。观察总结手术中镇痛效果。手术出血量,人流综合反应。结果:实验组镇痛完全,有效率达97.5％,明显优于对照组。两组比较有显著性差异,（P<0.05）。结论:吸入氧化亚氮镇痛效果确切,人流时病人意识处于朦胧状态,安静,无痛苦,不良反应少,苏醒快等优点。更多还原

【Abstract】 Objective: To investigate the analgesic effect and the safety of N2O inhaled in induced abortion. Methods; In 40 early pregnant women 50% N2O was inhaled during the operation process, the analgesic effect, bleeding volume, incidence of PASS were observed. Results: The analgesic effect of N2O inhaled was obvious and the effcective rate was 97. 5%. It had significant difference from the controls(P< 0. 05). Conclusion:The 50% N2O inhaled achieved obvious analgesic effect.更多还原