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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
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