Intraoperative amniocentesis and indomethacin treatment in the management of an immature pregnancy with completely dilated cervix.

We performed cervical cerclage on a completely dilated and effaced cervix after decompression of the amniotic sac with intraoperative amniocentesis. Indomethacin was used for tocolysis and to maintain mild oligohydraminios (amniotic fluid index 5-7 cm). The pregnancy was prolonged by 12 days and a viable infant was delivered at 25 weeks' gestation.