Amniotomy is usually performed for the purpose of inducing or expediting labor or in anticipation of the placement of internal monitors (uterine pressure catheters or fetal scalp electrodes). It is typically done at the bedside in the labor and delivery suite.

When is amniotomy used?

Amniotomy can be performed to start labor when the cervix is dilated and the baby’s head has moved down into the pelvis. Most women go into labor within a few hours after the amniotic sac breaks, but sometimes oxytocin may be needed.

When do we do artificial rupture of membranes?

Artificial rupture of the membranes (AROM), amniotomy, is performed when the cervix is partially dilated and effaced, and with the fetus in a vertex presentation with the head well applied to the cervix to avoid prolapse of the umbilical cord (or other presenting part).