1. A patient with congestive heart failure is prescribed furosemide 40 mg twice a

day. The available tablets are 20 mg each. How many tablets should the nurse

administer for each dose?

a) 1

b) 2*

c) 3

d) 4

Rationale: The nurse should divide the prescribed dose by the available dose to get

the number of tablets. 40 mg / 20 mg = 2 tablets.

2. A patient with diabetes mellitus is prescribed regular insulin 10 units

subcutaneously before breakfast. The insulin syringe has a concentration of 100

units/mL. How much volume should the nurse draw up for the injection?

a) 0.01 mL

b) 0.1 mL*

c) 1 mL

d) 10 mL

Rationale: The nurse should divide the prescribed units by the concentration to get

the volume. 10 units / 100 units/mL = 0.1 mL