**Question:** Which of the following dietary supplements is recommended for a pregnant lady on Heparin?

A. Vitamin K
B. Folic Acid
C. Omega-3 Fatty Acids
D. Calcium

**Core Concept:** Heparin is an anticoagulant drug used to prevent blood clots in pregnant women with certain medical conditions. Dietary supplements can play a role in addressing potential deficiencies and promoting overall health in such patients.

**Why the Correct Answer is Right:** Vitamin K is essential for the synthesis of clotting factors in the liver. Heparin interferes with these clotting factors, so supplementing with Vitamin K helps maintain adequate coagulation during pregnancy.

**Why Each Wrong Option is Incorrect:**

B. Folic Acid: Folic acid is crucial for neural tube development in the fetus, but it does not directly influence Heparin's anticoagulation effects or replenish clotting factors.
C. Omega-3 Fatty Acids: Although beneficial for fetal growth, omega-3 fatty acids do not address the anticoagulation concerns posed by Heparin therapy.
D. Calcium: Calcium supplementation is important for fetal bone development, but it does not counteract the effects of Heparin or replenish clotting factors.

**Clinical Pearl:** In pregnant women on Heparin, it is essential to monitor and manage vitamin K deficiency proactively. Supplementing with Vitamin K ensures appropriate clotting factor synthesis and prevents complications related to anticoagulation therapy.

**Correct Answer:** Vitamin K (Option A) is the recommended dietary supplement for a pregnant woman on Heparin. Monitoring and supplementing with Vitamin K addresses the potential anticoagulation-induced clotting factor deficiency, thereby maintaining adequate blood clotting and preventing adverse effects from Heparin therapy.