Placental AbruptionLiu WeiDepartmentof Ob &GyRenJihospital
Placental Abruption Liu Wei Department of Ob & Gy Ren Ji hospital
General ConsiderationDefinitionThe separation of the placenta from its site ofimplantation after 20 weeks of gestation orduring the course of delivery.Frequency0.51%-2.33% (our country)1% (other countries)Incidence offetal death200%0-350%0
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‰
EtiologyUncertain (primary cause)RiskfactorsIncreased age and parityVascular diseases: preeclampsia, chronichypertension, renal disease.3Mechanical factors: trauma, intercoursepolyhydramnios,Supinehypotensive syndromeSmoking, 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
PathologyMain changehemorrhage into the decidua basalis → deciduasplits → decidural hematoma → separationcompression, destruction of the placentaadjacenttoitTypesrevealed abruption, concealed abruptionmixed typeUteroplacentalapoplexy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
CONCEALEDHEMORRHAGEPARTIALPLACENTA PREVIAPLACENTALABRUPTIONEXTERNALHEMORRHAGEMOOIFIEDFROMEHB
Pathology