Modern features of the delivery complicated premature rupture of membrane at term

Abstract

Premature rupture of membranes (PROM) is diagnosed in 6–26.5% of full-term pregnancies. An analysis of the characteristics of labor and the frequency of complications in tPROM could allow us to identify «weak» points and optimize the managing this category of patients.The aim of the study was to assess the characteristics of labor during full-term pregnancy (at 37.0–41.0 weeks), complicated by premature rupture of the membranes.Materials and methods. A prospective analysis of the course of labor and the postpartum period was carried out in 425 patients with singleton pregnancy in cephalic presentation, 37,0–41,0 weeks of gestation, women of low and moderate risk groups, without contraindications to vaginal delivery.. As a complication of the pregnancy, 310 of them had PPROM (main group) and 115 women in labor went into labor with intact fetal membrane (comparison group). The features of the delivery and postpartum complications were analyzed.Results: The features of delivery patients with PROM was the longer duration of rupture – 4.7 times higher than in the comparison group (p<0.001), the second stage of labor – in the main group more an average of 7 minutes (p=0.008). The frequency of abnomally labor activity in the main group, such as abnormally slow or protracted labor (primary and secondary), was 2 times higher than it was in the comparison group. The diagnosis of «cervical dystocia» was observed in 27 cases (8.7%) only in the group with PROM. In the main group, oxytocin was used in 165 patients (53.2%), which is more than 2 times higher than in the comparison group – 25 (21.7%, p<0.001), respectively, the total dose of oxytocin used was higher at vaginal delivery: 8 .06 (0.44) U and 1.06 (0.46) U (p<0.001). The differences in this parameter at patents of both group with C-section were not signifcant. Medical analgesia in the main group was required 2 times more often than in the comparison group (83.5 and 43.5%; <0.001).The problem of tPROM is a higher percentage of operative delivery and obstetric trauma. Thus, in our study, the incidence of C-section was 54 cases (17.4%) compared with the another group – 2 cases (1.7%), vaginal operative delivery – 20 cases (6.5%) and 3 (2.6%)%) respectively (Xi=21.88; Df=2; p<0.001), cervical ruptures: 11.3% (p=0.002), episiotomies: 8.3% (p=0.099). The frequency of postpartum septic complications was comparable in groups, but high level of leukocyts and antibiotic therapy were more often in patients with PROM.Conclusion: the management of labor in patients with PROM is associated with a high percentage of the use of oxytocin, antibacterial therapy, various methods of medical analgesia, and operative delivery.