RESUMEN
Objective:To investigate the application effects of unprotected perineal delivery technique in low-risk nulliparous women during natural delivery.Methods:Seventy low-risk nulliparous women who delivered in January to December 2017 in Huaibei People's Hospital were included in this study. They were randomly assigned to undergo delivery with either conventional technology (control group, n = 35) or unprotected perineal delivery technique (observation group, n = 35). Lateral episiotomy rate, incidence of perineal tears, labor process time and Visual Analogue Scale score as well as the degree of postpartum perineal pain were compared between two groups. Results:Lateral episiotomy rate in the observation group was significantly lower than that in the control group [8.57% (3/35) vs. (45.71% (16/35), χ2 = 10.402, P < 0.001). The incidence rates of complete perineum, grade I perineal injury and grade II perineal injury in the observation group were 34.29% (12/35), 57.14% (20/35) and 8.57% (3/35), respectively, and those in the control group were 11.43% (4/35), 28.57% (10/35) and 60.00% (21/35) respectively ( χ2 = 4.732, 4.725, 18.324, all P < 0.05). The Visual Analogue Scale score in the observation group was significantly lower than that in the control group [(3.08 ± 0.42) points vs. (5.13 ± 0.58) points, t = 16.936, P < 0.001]. There were no significant differences in the time of first-stage, second-stage and third-stage labors between the two groups (all P > 0.05). Conclusion:Application of unprotected perineal delivery technique for low-risk primipara delivery can reduce maternal injury during delivery, which is worthy of application.