What condition involves placental detachment from the uterus before birth and is a medical emergency?

• A. Placental abruption (abruptio placentae)
• B. Placenta previa
• C. Uterine rupture
• D. Ectopic pregnancy

Answer: (A)

Placental abruption is the separation of the placenta from the uterine wall before the baby is born. This detachment can cause significant maternal bleeding and disrupt the fetus’s oxygen and nutrient supply, making it a true obstetric emergency. The classic scenario involves sudden, sharp abdominal or back pain with vaginal bleeding, and the uterus may feel rigid or unusually tender due to contractions. Because the tearing placental tissue can lead to rapid fetal compromise and maternal hemorrhage, immediate management centers on stabilizing the mother, rapidly assessing fetal status, and delivering if the detachment is heavy or if either the mother or fetus is unstable. In minor, stable cases, close monitoring and supportive care might be considered, but many require prompt delivery, often by cesarean section to safeguard both lives.

Placenta previa, by contrast, involves painless vaginal bleeding late in pregnancy and occurs when the placenta implants low in the uterus near the cervical os, not due to detachment. Uterine rupture presents with severe, sudden pain and often a loss of fetal station, with signs of maternal instability, and is not the placenta detaching. Ectopic pregnancy refers to implantation outside the uterus and presents differently, typically with positive pregnancy testing and abdominal pain, not placental detachment.