F loure 33-2, Normal Figure 33-3, Lo placenta Figure 33-4. Partial Figure 33-5, Complete implantation placenta previa placenta previa
classification
Manifestation Painless hemorrhage 1. The most characteristic symptom 2. Time: late pregnancy(after the 28th week) and delivery 3. Characteristics: sudden, painless and profuse Cause of bleeding Mechanical separation of the placenta from its implantation site, either during the formation of the lower uterine segment, during effacement and dilatation of the cervix in labor. Placentitis. Rupture of the venous in the decidua basalis
Manifestation • Painless hemorrhage 1. The most characteristic symptom 2. Time: late pregnancy (after the 28th week) and delivery 3. Characteristics: sudden, painless and profuse 4. Cause of bleeding Mechanical separation of the placenta from its implantation site, either during the formation of the lower uterine segment, during effacement and dilatation of the cervix in labor. Placentitis. Rupture of the venous in the decidua basalis