笑气吸入在分娩镇痛中的应用

目的探讨笑气吸入在分娩镇痛中的效果和对母儿的影响.方法对136例产妇在产程中给予吸入50%氧化亚氮(笑气)和50%氧气组成的混合气体实行镇痛分娩(研究组),另选择200例产妇在产程中不给予笑气吸入(对照组),观察两组产妇疼痛的程度、产程时间、分娩方式、羊水情况、产后出血量和新生儿Apgar评分等.结果研究组的镇痛有效率和自然分娩率高于对照组;总产程时间短于对照组,两组比较差异有显著性(P＜0.05).羊水污染、新生儿窒息率和产后出血,两组比较差异无显著性(P＞0.05).结论吸入50%氧化亚氮(笑气)和50%氧气组成的混合气体用于分娩镇痛可有效地缓解分娩疼痛,缩短产程时间,对母儿无不良影响,是一种安全、有效、简便的镇痛方法.

Application of inhaling nitrous oxide in labor pain relief

Objective:To investigate the efficiency of inhaling nitrous oxide for labor pain relief and its effects on maternal and fetus.Methods:A total of 136 cases of pregnant women were provided with nitrous oxide premixed with oxygen(50%:50%)(study group);Another 200 cases were not provided with 50% nitrous oxide in oxygen(control group).Two groups were compared on following indices:the degree of labor pains,delivery process,delivery ways,meconium stained of ammiotic fluid,rate of postpartum hemorrhage and neonatal Apgar scores.Results:The efficiency of relieving labor pain in study group and the rate of normal labor were higher than cpmtrol gr5oup;delivery porcess in study group was shorter than control group (WTBX]PWTBZ]<0.05);There were no significant differences in meconium stained of amniotic fluid,neonatal Apgar scores and rate of postpartum hemorrhage between two groups(WTBX]PWTBZ]>0.05).Conclusion:As a safe,effective and easy method,the inhalation of nitrous oxide premixed with oxygen (50%:50%) was effective for relieving labor pain and results in a short delivery process.