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We sought to estimate the effect of indomethacin on duration of pregnancy in women with dilated cervix between 14 (0)/ (7) to 25 (6)/ (7) weeks. Demographics, risk factors, and outcomes were compared in women 14 (0)/ (7) to 25 (6)/ (7) weeks with a dilated cervix > or = 1 cm who received indomethacin versus no indomethacin therapy, stratified for cerclage. Primary outcome was interval from presentation until delivery. Of 222 singleton gestations, 68 (31%) received indomethacin. In unadjusted and adjusted analyses, no significant differences were observed in interval from presentation to delivery and preterm birth < 28, < 32, or < 35 weeks comparing the indomethacin and no indomethacin groups, even after stratification for cerclage. In multivariate logistic regression analysis limited to women receiving cerclage, preterm birth < 32 weeks (odds ratio 0.56, 95% confidence interval 0.26, 1.25) and < 35 weeks (odds ratio 0.52, 95% confidence interval 0.23, 1.14) suggested a possible but not significant benefit for indomethacin use. Indomethacin therapy in women with dilated cervix at 14 (0)/ (7) to 25 (6)/ (7) weeks, regardless of cerclage or not, had no effect on pregnancy outcomes.

We evaluated whether the performance of an amniocentesis in women with a dilated cervix presenting at less than 26 weeks and subsequently managed by a physical exam-indicated cerclage increases the risk of spontaneous preterm birth (PTB) less than 28 weeks. Women between 15 (0)/ (7) to 25 (6)/ (7) weeks' gestation with a dilated cervix (1 to 4 cm) were identified. Multiple exclusion criteria were designated. The primary outcome was PTB less than 28 weeks. One hundred twenty-two women with a dilated cervix between 15 and 25 (6)/ (7) weeks gestational age were identified. Twenty-four (20%) of these had an amniocentesis performed. The unadjusted rate of PTB < 28 weeks differed between women who underwent amniocentesis compared with those who did not (58% versus 34%, respectively, P = 0.02), but after multivariate regression analysis, the performance of an amniocentesis was not an independent contributor to PTB < 28 weeks ( P = 0.90). The performance of an amniocentesis prior to cerclage did not independently contribute to PTB less than 28 weeks.

Maternal complications were increased by cesarean delivery but elective section may reduce neonatal complication.