All of the following can cause DIC during pregnancy except.
**Core Concept**
Disseminated Intravascular Coagulation (DIC) is a serious blood clotting disorder that can occur during pregnancy due to various underlying conditions. It involves the formation of blood clots in small blood vessels throughout the body, leading to consumption of clotting factors and ultimately, bleeding complications. Pregnancy-related DIC is a major cause of maternal and fetal morbidity and mortality.
**Why the Correct Answer is Right**
The correct answer is **A. Amniotic fluid embolism**. Amniotic fluid embolism is a condition where amniotic fluid enters the maternal circulation and triggers a severe inflammatory response, leading to DIC. This condition is a known cause of DIC during pregnancy and is often associated with severe bleeding and coagulopathy.
**Why Each Wrong Option is Incorrect**
* **Option B: Severe preeclampsia** can cause DIC due to endothelial damage and activation of the coagulation cascade.
* **Option C: Molar pregnancy** can cause DIC due to the release of pro-coagulant substances from the abnormal placenta.
* **Option D: Thrombophilia** can increase the risk of developing DIC during pregnancy due to the hypercoagulable state associated with these conditions.
**Clinical Pearl / High-Yield Fact**
It's essential to recognize that DIC can occur at any stage of pregnancy, including during the postpartum period, and can be triggered by various factors, including obstetric complications, infections, and malignancies.
**Correct Answer: D. Thrombophilia. Thrombophilia**