Effect of Entonox gas on severity of labor pain in primiparous mothers: A randomized controlled trial

Introduction: Labor pain is an inevitable and common phenomenon whose intensity is ranked highest among pain scores in humans. Reducing labor pain can encourage the women to accept vaginal delivery. The aim of the present study is to determine the effect of Cr\ Entonox gas on severity of labor pain. Materials and methods: The present study is a clinical trial conducted after receiving the ethical code from Ilam University of Medical Science (REC.1394.24.IR.IUMS). 78 primiparous women were included in the study by random allocation method. Test group (N=38) received Entonox gas during labor while the control group (N=40) had no intervention. The research tool was demographic questionnaire and visual analog scale. After data collection, the data were analyzed by analytical and descriptive statistics using SPSS Version 16 software. Result: The results showed that Entonox gas reduced the pain of the patients in the experimental group and before the intervention in the test group, the mean (SD) pain was 7.26 (0.55), which after intervention reached 2.44 (0.64). Which was statistically significant (p <0.001). Conclusion: Entonox gas caused a reduction in the pain of mothers during labor. Thus this intervention can be applied as an intervention capable of reducing the pain in mothers.