Before a baby is born, the amniotic sac breaks open, causing
amniotic fluid to either leak slowly or gush out. When this happens before
contractions start, it is called premature rupture of membranes (PROM).
PROM can occur at any time during pregnancy before labor begins.
Early PROM (before 37 completed weeks of pregnancy) may be referred to as
preterm premature rupture of membranes, or pPROM.
PROM is typically unexpected, and the cause is often difficult to
identify. Known causes of PROM include uterine infection; overstretching of the
uterus, such as by twins or more or by an excess of amniotic fluid; and trauma,
such as from a vehicle accident.
Labor usually begins shortly after PROM occurs. If PROM occurs
after 34 to 36 weeks of pregnancy and labor does not start within 12 to 18
hours, labor may be induced to reduce the risk of infection.
Sarah Marshall, MD - Family Medicine & Adam Husney, MD - Family Medicine & William Gilbert, MD - Maternal and Fetal Medicine
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