ATI RN
Vitamin Drugs Questions
Question 1 of 5
The daily dietary requirement of Vitamin $B_{12}$ by an adult is
Correct Answer: A
Rationale: The adult daily requirement for vitamin B12 is 1-3 μg, sufficient for metabolic needs.
Question 2 of 5
Hydroxocobalamine differs from cyanocobalamine in that
Correct Answer: D
Rationale: Hydroxocobalamin is better retained and effective in tobacco amblyopia due to cyanide binding.
Question 3 of 5
Megaloblastic anemia is caused by deficiency of
Correct Answer: B
Rationale: Vitamin B12 deficiency causes megaloblastic anemia; iron causes microcytic, and vitamin C deficiency causes scurvy.
Question 4 of 5
Vitamin B12 is a required co-factor for the following reaction
Correct Answer: D
Rationale: Vitamin B12 is a cofactor in all three reactions, critical for energy metabolism and folate cycling.
Question 5 of 5
Vitamin K is indicated for the treatment of bleeding occurring in patients
Correct Answer: C
Rationale: Obstructive jaundice impairs vitamin K absorption, reducing clotting factor synthesis and causing bleeding.