Spontaneous tearing of the uterus
May result in fetus being expelled into peritoneal cavity may result in the fetus being expelled into the peritoneal cavity.
Occurs in late pregnancy or active labor
Rare, prevalence:
No prior c-section = 0.01%
Prior c-section = 0.2-0.8%
Risk factors:
Prior c-section (major)-<unk>  most commonly occurs along prior scar lines
Malpresentation
Labor dystocia
Hypertension
Bicornuate uterus
Grand multiparity
Connective tissue disorder
Placenta percreta
Prior myomectomy
Misoprostol use (oxytocin likely safe)
No prior c-section = 0.01%
Prior c-section = 0.2-0.8%
Prior c-section (major)-<unk>  most commonly occurs along prior scar lines
Malpresentation
Labor dystocia
Hypertension
Bicornuate uterus
Grand multiparity
Connective tissue disorder
Placenta percreta
Prior myomectomy
Misoprostol use (oxytocin likely safe)
Uterine rupture
Emergent delivery
Septic abortion
Placental abruption
Placenta previa
Vasa previa
Placenta accreta
Preterm labor