Couvelaire uterus present in:
**Core Concept**
Couvelaire uterus refers to a condition of uterine hypertonus and submucosal hemorrhage, often associated with severe preeclampsia. It is characterized by a uterine muscle layer that becomes thickened and hemorrhagic due to the rupture of submucosal veins. This condition can lead to maternal and fetal complications, including placental abruption and fetal distress.
**Why the Correct Answer is Right**
The Couvelaire uterus is a result of the rupture of submucosal veins in the uterine muscle layer, leading to bleeding into the myometrium. The increased pressure and vascularity of the affected area cause the uterine muscle to become hypertonic. The condition is often seen in cases of severe preeclampsia, where the placenta becomes abnormally attached to the uterine wall, leading to the rupture of these veins.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because Couvelaire uterus is not typically associated with a placenta previa. While both conditions can cause bleeding, the pathophysiology is distinct.
**Option B:** This option is incorrect because uterine inversion is a condition where the uterus turns inside out, often following a difficult delivery. While both conditions can cause uterine bleeding, the mechanisms are different.
**Option C:** This option is incorrect because placental abruption is a condition where the placenta separates from the uterus, often causing bleeding. While both conditions can cause maternal and fetal complications, the pathophysiology is distinct.
**Clinical Pearl / High-Yield Fact**
The Couvelaire uterus is a classic sign of severe preeclampsia, and its presence should prompt immediate evaluation and management of the patient.
**Correct Answer: D. Severe preeclampsia**