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]P[WTBZ]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]P[WTBZ]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.