(204) Symphysiolysis in Pregnancy: Is there an impact on Obstetric Outcomes?

Symphysiolysis commonly induces significant pain and intermittent anxiety during pregnancy. However, there is a scarcity of information regarding the impact of this condition on labor outcomes and birth outcomes. We aimed to compare obstetrical and neonatal outcomes, in affected women compared to women without this condition.

Study Design: This retrospective cohort study included women with a singleton pregnancy, no prior cesarean delivery (CD), who attempted vaginal delivery at 37 weeks or later in a tertiary medical center between 2013 and 2021. The cohort comprised nulliparous and multiparous, each further divided into two groups: those diagnosed with symphysiolysis during pregnancy and a control group.Maternal and delivery characteristics, as well as obstetric and neonatal adverse outcomes, were compared between the two groups.Adjusted odds ratios (aOR) with 95% confidence intervals (95%CI) were calculated, controlling for confounding variables.

Results: A total of 15,557 nulliparous and 27,477 multiparous women were included in the study, among whom 233(1.5%) nulliparous and 515(1.9%) multiparous were diagnosed with symphysiolysis. As compared to controls, both nulliparous and multiparous women with symphysiolysis were younger (27.5±4.4 vs. 28.5±5.0, p=0.002 for nulliparous,31.1±4.9 vs. 32.2±4.8, p=0.000 for multiparous), had a higher body mass index (BMI) prior to pregnancy (25.0±5.2 vs. 23.5±5.0,p=0.000 and 25.3±5.5 vs. 25.3±5.5,p=0.000 respectively), and had a higher prevalence of smoking during pregnancy (7.3% vs. 4.4%, P=0.036 and 9.3% vs. 4.7%,P=0.000, respectively).No differences were found between both groups in obstetric outcomes such the rate of vacuum extractions, CDs or perineal lacerations (see Table 1). Moreover, there were no significant differences observed between the groups in rates of low Apgar scores (< 7) at 5 minutes, low arterial pH (< 7.1), or admissions to the neonatal intensive care unit.

Conclusion:

Women who are diagnosed with symphysiolysis during pregnancy, along with their fetuses, do not have an increased risk of obstetrical or neonatal complications during labor.