Placental Abruption Liu we Department of ob Gy Ren Ji hospital
Placental Abruption Liu Wei Department of Ob & Gy Ren Ji hospital
General consideration Definition The separation of the placenta from its site of implantation after 20 weeks of gestation or during the course of delivery. Frequency 0.51%-233%o(our country) 1%o(other countries) Incidence of fetal death 200%-350‰
General Consideration • Definition The separation of the placenta from its site of implantation after 20 weeks of gestation or during the course of delivery. • Frequency 0.51%-2.33% (our country) 1% (other countries) • Incidence of fetal death 200‰-350‰
Etiology Uncertain(primary cause) Risk factors 1. Increased age and parity 2. Vascular diseases: preeclampsia, chronic hypertension, renal disease. 3. Mechanical factors: trauma, intercourse polyhydramnios, Supine hypotensive syndrome 5. Smoking, cocaine use, uterine myoma
Etiology • Uncertain (primary cause) • Risk factors 1. Increased age and parity 2. Vascular diseases: preeclampsia, chronic hypertension, renal disease. 3. Mechanical factors: trauma, intercourse, polyhydramnios, 4. Supine hypotensive syndrome 5. Smoking, cocaine use, uterine myoma
Pathology Main change hemorrhage into the decidua basalis -> decidua splits→ decidural hematoma→ separation, compression, destruction of the placenta adjacent to it Types revealed abruption, concealed abruption, mixed type Uteroplacental apoplexy子宫胎盘卒中
Pathology • Main change hemorrhage into the decidua basalis → decidua splits → decidural hematoma → separation, compression, destruction of the placenta adjacent to it • Types revealed abruption, concealed abruption, mixed type • Uteroplacental apoplexy 子宫胎盘卒中
CONCEALED HEMORRHAGE PARTIAL PLACENTA PREVIA PLACENTAL ABRUPTION EXTERNAL HEMORRHAGE OOF贬 D FROM EHE
Pathology