NR326 Practice Dosage Calculation Questions
1) The patient has an order for Lithium 300 mg PO. The medication available is Lithium 100 mg capsules.
How many capsules will the nurse administer? ___ capsule(s) (If needed, round to the nearest whole
number.)
2) The patient has an order for chlorpromazine(Thorazine) syrup 18 mg PO. The medication available is
chlorpromazine syrup 10 mg/5mL. How many mL will the nurse administer? ___ mL (If needed, round to
the nearest whole number.)
3) The healthcare provider ordered lorazepam (Ativan) 1.5 mg, IV, every 6 hours. The medication
available is lorazepam 1 mg/mL vials. How much medication will the patient receive each day? ___ mL (If
needed, round to the nearest whole number.)
4) The healthcare provider ordered naloxone HCL (Narcan) 10 mcg/kg, IV. The patient weighs 138 lb. The
medication available is naloxone 0.4 mg/mL vials. How much medication will the nurse prepare to
administer? ___ mL (If needed, round to the nearest tenth.)
5) The patient has an order for valproic acid (Depakote) 10 mg/kg/day PO divided into 2 doses. The
patient weighs 166 lb. How much will the nurse administer for each dose? ___ mg (If needed, round to
the nearest whole number.)
6) The patient has an order for Regular insulin 18 units/hr IV. The medication available is Regular insulin
200 units in 500 mL NS. At what rate will the nurse set the infusion? ___ mL/hr (If needed, round to the
nearest whole number.)
7) The patient has an order for aminophylline 0.4 mg/kg/hr IV. The patient weighs 148 lb. How much will
the nurse administer for each dose? ___ mg/hr (If needed, round to the nearest tenth.)
8) The healthcare provider ordered propofol (Diprivan) 8 mcg/kg/min IV. The patient weighs 156 lb. The
pharmacy delivered propofol 100 mg/50 mL 0.9% normal saline. At what rate will the nurse set the
infusion? ___ mL/hr (If needed, round to the nearest tenth.)
9) The healthcare provider ordered 1,000 mL of Ringers lactate solution (RL) to infuse over 16 hours. The
available tubing delivers 15 gtt/mL. At what rate will the nurse set the infusion? ___ gtt/min (If needed,
round to the nearest whole number.)
10) The patient has an order for lorazepam (Ativan) 0.4 mg/hr IV. The medication is available lorazepam
5 mg/100 mL. At what rate will the nurse set the infusion? ___ mL/hr (If needed, round to the nearest
whole number.)
11) The patient has an order for diazepam (Valium) 0.15 mg/kg/day PO divided into 3 doses. The patient
weighs 175 lb. How much will the nurse administer for each dose? ___ mg (If needed, round to the
nearest whoole number.)
12) The patient has an order for diazepam (Valium) IV in 3 divided doses. The patient weighs 156 lb.
Diazepam can be safely administered up to 0.8 mg/kg/day in 3 divided doses. What is the maximum
dosage of medication in mg that this patient can receive per dose? ___ mg (If needed, round to the
nearest tenth.)
NR326 Practice Dosage Calculation Question Answers
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3
9
6
1.6
377
45
26.9
17
16
8
4
18.9