Spontaneous rupture of membranes

Last revised by Daniel J Bell on 19 Dec 2020

Spontaneous rupture of membranes (SROM) refers to rupture of fetal membranes occurring on its own (in contrast with artificial rupture of membranes). When this occurs before ~37 weeks in gestation, it is then termed spontaneous premature rupture of membranes (SPROM) which is the usual cause of preterm premature rupture of membranes (PPROM).

Epidemiology

Risk factors

Risk factors of SROM include 1:

  • scarred uterus secondary to previous uterine surgery (most common)
  • labor
  • oxytocin use
  • adenomyosis

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