An artificial rupture of membranes (AROM) is a procedure that can be used for the induction of labor.
Procedure
A sterile, plastic, thin hook is brushed against the membranes just inside the cervix (termed a membrane sweep) This causes the fetal head to move down against the cervix, usually resulting in the contractions becoming stronger and eventually causing the membranes to rupture.
Advantages
labor may be shortened by an hour
facilitates collection of the amniotic fluid, which can be examined, e.g. for the presence of meconium, indicating fetal distress.
the fetal heart rate can be monitored with cardiotocography directly on the baby's scalp
Disadvantages
the baby may turn to a breech position, making birth more difficult if the membranes are ruptured before head engagement
increased risk of umbilical cord prolapse
increased risk of infection if there is a prolonged time between rupture and birth.
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