This study was a small-scale, "quasirandomized," controlled trial carried out to determine the effectiveness and safety of cervical cerclage performed using the McDonald technique in patients with symptomatic placenta previa. Outcomes were compared in 18 women undergoing cerclage and 19 control women. Criteria for admission to the study included painless vaginal bleeding, a gestational age of 20 to 34 weeks, and sonographic confirmation of the diagnosis. Gross congenital anomalies, other complications, type 1 placenta previa more than 2 cm from the internal os, and a cervical length less than 3 cm, noted on speculum examination 24 hours after bleeding stopped, were criteria for exclusion.Patients were placed on bedrest, sedated if bleeding was present, and given steroids weekly from 28 to 34 weeks gestation. Blood was transfused as needed. The McDonald stitch was placed under antibiotic prophylaxis and tocolysis that began 1 hour before cerclage and continued for 48 hours postoperatively. If placenta previa was characterized as "minor," patients were discharged 3 days after cerclage. Pregnancies were terminated at 37 weeks gestation.All but one of the end points recorded differed significantly between the cerclage and control groups, the exception being the amount of blood transfused. Cerclage patients had fewer major hemorrhagic episodes and fewer episodes associated with blood clots or signs of hypovolemia. In none of 10 patients with minor placenta previa who had cerclage and subsequent normal-term vaginal delivery was the placenta felt on pelvic examination after removal of the stitch. Pregnancies were prolonged by a mean of 53 days in the cerclage group and 19 days in control women. The respective mean gestational ages at delivery were 37 and 31 weeks. Mean birth weights were substantially greater in the cerclage group (2549 g vs 1568 g). Eight of the 19 control pregnancies ended in perinatal death, but there were no such deaths in the 18 cerclage cases.These promising results deserve a large randomized, controlled trial that would distinguish between the effect of cerclage in women with minor and major placenta previa.

Specific reference ranges for patients during the postpartum period could be used in future studies to determine the parameters, or combinations of parameters, that perform best as early markers of hemodynamic compromise in women experiencing early postpartum hemorrhage.

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Objective This study aims to investigate accuracy of group beta Streptococcus (GBS) rectovaginal cultures at 35 to 37 weeks in predicting intrapartum colonization. Study Design Institutional review board (IRB) approved prospective cohort study of 302 women from October 2015 to May 2017. Patients had the following tests for GBS: first trimester urine culture, rectovaginal culture at 35 to 37 weeks, and intrapartum rectovaginal culture. Outcomes included accuracy of 35- to 37-week GBS rectovaginal culture in detecting results intrapartum, and accuracy of first trimester urine culture in comparison to intrapartum rectovaginal cultures. Results There was sufficient evidence of agreement between results at 35 to 37 weeks with intrapartum cultures (p = 0.001). However, agreement was weak, 11 patients (3.7%) were GBS positive intrapartum but negative at 35 to 37 weeks; and 33 patients (11%) were initially GBS positive but were negative intrapartum. Sensitivity and specificity of the 35- to 37-week culture was 69% (95% confidence interval [CI]:54–84%) and 87% (95% CI: 83–91%), respectively. There was also weak agreement between first trimester urine culture and intrapartum rectovaginal culture. Specificity for this assessment was 98% (95% CI: 97–100%) and was significantly different compared with antepartum GBS culture (p < 0.001). Accuracy between antepartum GBS rectovaginal culture and urine culture was similar (85 vs. 87%, p = 0.47). Conclusion The 35- to 37-week GBS rectovaginal culture might be a poor predictor for intrapartum colonization.

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