Placenta

Placental Invasion

Accreta - up to myometrium

Increta - into myometrium

Percreta - through myometrium

Placenta Previa

Implants in the lower uterine segment near os

Painless bleeding

Marginal previa if placenta comes within 1 cm of internal os

Vaso Previa

Vessels course over internal os

Placental Abruption

Premature separation of uterus from placenta

Often painful bleeding