HESI Dosage Calculation - Practice Exam

1. Amoxicillin 500 mg PO every 8 hours is prescribed for a client with an

infection. The drug is available in a suspension of 125 mg/5ml. How

many ml should the nurse administer with each dose?

20 ml

2. Oxytocin (Pitocin) 4 milliunits/min is prescribed for a client with an

ineffective contraction pattern. To administer the prescribed dosage, the

nurse adds 20 units of oxytocin to 1,000 ml of Ringer's Lactate. The

infusion pump should be set to deliver how many ml/hour? (Enter numeric

value only.)

12

3. The healthcare provider prescribes the adjustment of the IV hourly rate

based on the nasogastric tube (NGT) output q4h for a client who had

abdominal surgery yesterday. From 1200 to 1600, the NGT output was

240 ml, and the IV of D5W 0.45% NS was infused at a rate of 100

ml/hour. At 1600 the nurse should regulate the IV to deliver how many

ml/hour to replace this fluid loss? (Enter numeric value only.)

140

4. A client with a Trichomonas vaginalis infection receives a prescription for

metronidazole (Flagyl) 1 gram. The medication is available in 500 mg

tablets. How many tablets should the nurse administer? (Enter numeric

value only.)

2

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5. A client is receiving an IV solution of 2 grams of medication diluted in

100 ml of normal saline over a one-hour time period. How many mg of

medication is the client receiving per minute? (Enter numeric value only.

If rounding is required, round to the nearest whole number.)

33

6. The healthcare provider prescribes propofol (Diprivan) at 8 mcg/kg/minute

for a client during conscious sedation. The drug is dispensed as 100 mg/50

ml 0.9% normal saline. The client's weight is 198 pounds. The nurse

should program the infusion pump to deliver how many ml/hour? (Enter

numeric value only. If rounding is required, round to the nearest tenth.)

21.6

7. The healthcare provider prescribes an intermittent infusion of nafcillin

(Unipen) 800 mg IV for a pediatric client. The drug is dispensed in a

concentration of 250 mg/ml, and the recommended infusion concentration

is 40 mg/ml. When adding the prescribed dose to the volume control device,

how many ml of IV solution should the nurse add to dilute? (Enter numeric

value only. If rounding is required, round to the nearest tenth.)

16.8

8. A client weighing 86 kg is receiving dopamine at 8 mcg/kg/minute. The

drug is dispensed as dopamine 800 mg/500 ml. The nurse should program

the infusion pump to deliver how many ml/hour? (Enter numeric value only.

If rounding is required, round to the nearest tenth.)

25.8

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