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1. A patient is prescribed 500 mg of amoxicillin every 8 hours for 10 days.
The pharmacy has amoxicillin suspension 250 mg/5 mL. How many
milliliters of the suspension should the nurse administer per dose?
a) 5 mL
b) 10 mL*
c) 15 mL
d) 20 mL
Rationale: Using dimensional analysis, the nurse should set up the
equation as follows: 500 mg x (5 mL/250 mg) = 10 mL.
2. A patient with diabetes mellitus is ordered to receive 12 units of regular
insulin and 28 units of NPH insulin subcutaneously before breakfast. The
nurse has two syringes: one with a capacity of 50 units and one with a
capacity of 100 units. Which syringe should the nurse use to administer
the insulin and why?
a) The 50-unit syringe, because it is more accurate for smaller doses.
b) The 50-unit syringe, because it can hold both types of insulin.
c) The 100-unit syringe, because it can hold both types of insulin.*
d) The 100-unit syringe, because it is more accurate for larger doses.
Rationale: The nurse should use the 100-unit syringe, because it can hold
both types of insulin and the total dose is 40 units. The 50-unit syringe
cannot hold the total dose and would require two injections.
3. A patient with hypertension is prescribed amlodipine 5 mg once daily.
The nurse has amlodipine tablets 2.5 mg. How many tablets should the
nurse administer per dose?
a) 0.5 tablet
b) 1 tablet
c) 2 tablets*
d) 4 tablets
Rationale: Using dimensional analysis, the nurse should set up the
equation as follows: 5 mg x (1 tablet/2.5 mg) = 2 tablets.
4. A patient with chronic kidney disease is ordered to receive epoetin alfa
50 units/kg intravenously three times a week. The patient weighs 70 kg.
The nurse has epoetin alfa injection 2000 units/mL. How many milliliters
of the injection should the nurse administer per dose?
a) 0.875 mL
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