Premature rupture of membranes

Last revised by Ciléin Kearns on 9 Feb 2023

Premature rupture of membranes (PROM) refers to a rupture of the amniotic sac and chorion (membranes) occurring prior to the onset of uterine contractions. When this occurs prior to 37 weeks it is then termed a pre term premature rupture of membranes (PPROM). By this definition, PROM is classified as a rupture of membranes between 37 weeks and full term.

The estimated incidence is at ~10% of pregnancies at term and ~0.7-2.0% of pregnancies before 37 weeks (for PPROM). 

Possible findings may include:

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