Nutrition and Vitamin Deficiencies · USMLE Step 1

Which vitamin deficiency in newborns (especially if not given prophylaxis) leads to increased risk of bleeding and hemorrhagic disease?

  1. Vitamin A
  2. Vitamin C
  3. Vitamin K
  4. Vitamin D
Show answer and explanation

Correct answer: Vitamin K

Vitamin K deficiency in neonates impairs gamma-carboxylation of clotting factors, leading to bleeding disorders and hemorrhagic disease of the newborn.

Difficulty: Medium Question 18 of 21

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