Evidence-based birth membrane sweep

During a vaginal examination, a trained clinician places a finger through the cervix and makes a sweeping movement to loosen the membranes around the lower part of the uterus. It is usually offered when the cervix can be reached and when the timing is appropriate for your pregnancy. It is different from formal induction, which can use medicines or other methods to start labour.

You may feel pressure, cramping, or discomfort during and after the examination. Light bleeding or mucus streaked with blood can occur. A sweep cannot be completed if the cervix is closed or difficult to reach, and your clinician should explain alternatives and obtain your agreement first.

Beforehand, ask why the sweep is being offered, what alternatives exist, and what happens if you decline. Afterward, rest if needed and use a pad to observe any discharge or bleeding. Keep track of contractions, fluid leakage, and fetal movements according to the plan given by your maternity team. You can contact them if discomfort worries you.

Contact your maternity unit promptly for bleeding like a period or heavier, persistent severe pain, suspected waters breaking, reduced fetal movements, fever, or feeling unwell. Follow your unit’s instructions for contractions and attend urgent assessment when advised. The procedure should not delay review of a concerning symptom.

Ask whether your cervix is ready for a sweep, what benefit is expected in your situation, whether another sweep could be offered, and when formal induction would be discussed. Check how to reach the maternity team overnight.