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Pediatrics · Nutrition and malnutrition: vitamin E deficiency in preterms
Sample itemA 6-week-old preterm baby on a formula rich in polyunsaturated fatty acids and iron has pallor and mild oedema. The blood count shows haemolytic anaemia with thrombocytosis. Deficiency of which vitamin is likely?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
A. Vitamin E
Preterm babies have low stores of vitamin E, which protects red cell membranes from oxidant injury. Iron and polyunsaturated fats increase the oxidant load, so haemolytic anaemia, oedema and thrombocytosis develop. Supplementation with vitamin E corrects it.
Option by option
A. Vitamin E (correct)
Correct. Low antioxidant protection leads to haemolysis of red cell membranes.
B. Vitamin K
Vitamin K deficiency causes bleeding from low clotting factors, not haemolysis.
C. Folate
Folate deficiency causes macrocytic anaemia, not haemolysis with oedema.
D. Vitamin B12
Vitamin B12 deficiency causes megaloblastic anaemia and is uncommon at this age.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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