文档介绍：Postpartum Hemorrhage
Union Hospital
Definition
Postpartum hemorrhage denotes excessive bleeding (>500mL in vaginal delivery) following delivery.
Incidence
5~8%
Postpartum hemorrhage is the mon cause of excessive blood loss in pregnancy.
Etiology
Uterine atony
Obstetric lacerations
Retained placental tissue
Coagulation deffects
Uterine atony
Uterine atony exists when the myometrium cannot contract
Atony is the mon cause of postpartum hemorrhage (50% of cases)
Obstetric lacerations
Uterus
cervix
vagina
vulva
hematomas
Retained placental tissue
Placenta accreta
in manual removal of the placenta
in mismanagement of the third stage of labor
in unrecognized enturiate placenta
Coagulation deffects
Abruptio placentae
excess thromboplastin from a retained dead fetus
amniotic fluid embolism
severe preeclampsia
eclampsia
sepsis
Prevention
Predelivery preparation
delivery
third stage of normal labor (placenta separation)