[Pregnancy outcomes in women with previous preterm cesarean delivery between 22 and 28 weeks of gestation]

The rate of caesarean delivery between 22 and 28 weeks of gestation (weeks) has increased for several years. The aim of the study was to describe subsequent pregnancies in women with a history of caesarean delivery between 22 and 28 weeks.

We performed a retrospective, observational, bicentric cohort study in tertiary care maternity units. We included women who had a caesarean delivery between 22 and 28 weeks from December 1, 2014 to December 31, 2017. We then retrospectively collected data on subsequent pregnancies of these patients up to March 2020. We described the subsequent pregnancy rate and the outcomes of these pregnancies.

Among the 186 women who had a caesarean between 22 and 28 weeks, data from 103 of them could be collected, including 47 (45.6%) women who had 64 new pregnancies. Of the 47 first pregnancies after the preterm cesarean, 19 (40.4%) were completed at≥37 weeks. The mode of delivery was a cesarean in 23 cases (79.3%). A trial of labor after cesarean was only considered in 7 cases (24.1%), and 6 women (20.7%) gave birth vaginally.

If pregnancy is desired after a caesarean between 22 and 28 weeks, the pregnancy rate is high without recurrence of prematurity in the majority of cases. Cesarean delivery is the most common mode of delivery. In case of trial of labor after cesarean, the success rate is reasonable.