When is cervical cerclage recommended for preterm labour?

Preterm labour involves contractions and cervical change before the baby is ready for birth. A cerclage supports the cervix; it does not stop established labour or treat infection. Placing a stitch while contractions, bleeding, infection or ruptured membranes are present may increase harm, so clinicians first assess the cervix, membranes, contractions and both patients' wellbeing.

A specialist may discuss a stitch before labour if scans show a shortening cervix or an examination finds early opening. The decision also considers pregnancy history, symptoms, gestational stage and whether another treatment is more appropriate.

Contact your maternity unit immediately for regular tightening, period-like cramps, pelvic pressure, backache, bleeding, unusual discharge or fluid leakage. Do not self-monitor at home while waiting for symptoms to become severe. Bring your pregnancy notes and tell the team about a previous cerclage or cervical scan result.

Seek emergency assessment for painful regular contractions, a gush or ongoing trickle of fluid, heavy bleeding, fever, severe abdominal pain, faintness or reduced fetal movement. If you already have a stitch, mention it when calling. Do not attempt to remove or adjust it yourself; the maternity team decides what happens if labour begins.

Ask whether your symptoms represent labour, how the cervix and membranes look, and whether a cerclage would be unsafe. Discuss monitoring, medicines that may be offered, the signs of infection, and what the plan is if contractions continue or your waters break.