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为了减轻分娩的疼痛 ,本院近期开展了产妇自我-间断吸入氧化亚氮混合气体无痛分娩法。此研究旨在对其镇痛有效性和安全性进行临床分析。1 资料与方法1.1 对象 随机选择单胎、头位、足月 ;无心肺疾病 ;无胎儿宫内窘迫和异常胎心监护结果 ;无氧化亚氮使用禁忌症 (如体内有闭合
In order to reduce the pain of childbirth, the hospital recently conducted a maternal self-intermittent inhalation of nitrous oxide mixed gas painless delivery method. The aim of this study was to conduct a clinical analysis of its analgesic efficacy and safety. 1 Materials and Methods 1.1 Subjects Randomly selected single-child, head, full-term; no heart and lung disease; no fetal distress and abnormal fetal heart rate monitoring results; use of non-nitrous oxide contraindications (such as the body closed