Vitamins Quick Study

Question 1

Action of Vitamin D vs. Parathyroid Hormone on Calcium and Phosphate in the blood

Answer 1

Vitamin D: increase serum calcium & phosphate

Parathyroid Hormone: increase serum calcium; decrease serum phosphate

Question 2

vitamin deficiency due to resection of the terminal ileum

Answer 2

Cobalamin/Vitamin B12

Question 3

60 year old man has symptoms of fatigue and peripheral neuropathy. Labs indicate microcytic anemia. What is most likely dx?

Answer 3

pernicious anemia (B12)

Question 4

symptomatic difference between cobalamin and folate deficiencies?

Answer 4

both produce megaloblastic anemia, but only cobalamin results in neurologic symptoms.

Question 5

intracranial hemorrhage… cause by what vitamin deficiency?

Answer 5

vitamin K

Question 6

next step in management of comatose alcoholic patient diagnosed with wernicke-korsakoff syndrome?

Answer 6

start on IV thiamine and dextrose

Question 7

decreased gamma-carboxylation of glutamate residues is due to

Answer 7

vitamin K deficiency

Question 8

differentiate vitamin K and vitamin C deficiency.

Answer 8

vit. K deficiency results in an increase in Prothrombin Time.

Question 9

biotin is a cofactor for what enzyme(s)

Answer 9

carboxylases

Question 10

why would a newborn suffer from vitamin K deficiency despite receiving a vitamin K injection after the time of birth?

Answer 10

antibiotics

Question 11

what causes pellagra

Answer 11

niacin deficiency

Question 12

how is niacin synthesized in the body?

Answer 12

tryptophan

Question 13

A patient with Vitamin B12 deficiency with mild acidosis. What would be the cause of the acidosis?

Answer 13

methylmalonic acid

Question 14

Location of the rate limiting step in the conversion of Cholecalciferol to Calcitriol?

Answer 14

kidney

Question 15

raw eggs can cause a deficiency of

Answer 15

biotin