CMSRN Medical-Surgical Nursing

Category - Hematological

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Ana is diagnosed to have pernicious anemia. The physician orders 0.2 mg of Cyanocobalamin (Vitamin B12) IM. Available is a vial of the drug labeled 1 ml= 100 mcg. The nurse should administer:

0.5 ml
1.0 ml
1.5 ml
2.0 ml

Explanation

Answer - D - The nurse should administer 2.0 ml. First, convert milligrams to micrograms and then use ratio and proportion (0.2 mg= 200 mcg) 200 mcg : 100 mcg= X ml : ml 100 X= 200 X = 2 ml. Inject 2 ml. to give 0.2 mg of Cyanocobalamin.

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