SAC | Mt. SAC Relays | Cul-de-sac | Dan le sac vs Scroobius Pip | cul-de-sac | SAC programming language | Sac City, Iowa | SaC | Sac | Psychic... Powerless... Another Man's Sac | Knots Landing: Back to the Cul-de-Sac | Amniotic fluid | A flowering ''Escallonia'' cultivar dominates the center of this cul-de-sac in Sidney, British Columbia |
Prelabor rupture of membranes (PROM), or premature rupture of membranes, is a condition that occurs in pregnancy , and is defined as rupture of the membrane of the amniotic sac and chorion more than one hour before the onset of labor, which, in turn, is defined by the ACOG as uterine contractions of sufficient frequency and intensity to result in progressive effacement and dilation of the cervix.