RN Hesi Med Surg Dosage Calculations | Nurselytic

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RN Hesi Med Surg Dosage Calculations Questions

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Question 1 of 5

Penicillin G procaine 240,000 units Intramuscularly is prescribed for a 4-year-old child who has a streptococcal respiratory Infection. The medication vial is labeled 1,200,000 units/2 mL. How many ml. should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

Correct Answer: 0.4

Rationale: Concentration: 1,200,000 units / 2 mL = 600,000 units/mL. Volume = 240,000 / 600,000 = 0.4 mL.

Question 2 of 5

The healthcare provider prescribes amoxicillin 500 mg every 8 hours for a child who weighs 88 pounds. The recommended maximum safe dose is 50 mg/kg/24 hour. The available suspension is labeled, Amoxicillin Suspension 250 mg/5 mL. Based on this child weight, how many mL should the nurse administer ? (Enter numerical value only. (If rounding is required, round to the whole number.))

Correct Answer: 3

Rationale: Weight: 88 × 0.454 = 39.952 kg. Max safe dose: 50 mg/kg/day × 39.952 = 1997.6 mg/day. Per dose (3 doses/day): 1997.6 / 3 = 665.87 mg. Volume: 665.87 / (250 mg / 5 mL) = 2.6635 mL, rounded to 3 mL.

Question 3 of 5

The healthcare provider prescribes ceftazidime 30 mg/kg/day for an infant weighing 3,500 grams. What dose should the nurse administer daily to this infant? (Enter numeric value only.)

Correct Answer: 105

Rationale: Weight: 3500 g = 3.5 kg. Dose: 30 mg/kg/day × 3.5 = 105 mg/day.

Question 4 of 5

A client receives a prescription for loratadine suspension 10 mg by mouth once a day. The bottle is labeled 'Loratadine for Oral Suspension, UPS 5 mg per 5 mL.' How many teaspoons should the nurse instruct the client to take? (Enter numerical value only.)

Correct Answer: 2

Rationale: Volume: 10 mg / (5 mg / 5 mL) = 10 mL. Teaspoons: 10 / 5 = 2 teaspoons.

Question 5 of 5

The nurse plans to provide the next shift with the IV fluid balance for a client who had a 440 mL secondary infusion that was started 2 hours ago at a rate of 85 ml/hour via an infusion pump. What is the remaining volume to be infused? (Enter numeric value only.)

Correct Answer: 270

Rationale: Infused volume = 85 mL/hour × 2 hours = 170 mL. Remaining volume = 440 - 170 = 270 mL.

Similar Questions

During a home visit, the nurse learns that a client is taking calcium polycarbophil, an over the counter laxative. A single tablet contains 625 mg and the daily maximum dosage is 5 grams in divided doses. How many tablets could the client safely take in one day? (Enter the numeric value only. If rounding is required, round to the nearest whole number.)
The healthcare provider prescribes ganciclovir 375 mg intravenously (IV) every 12 hours to infuse over 90 minutes. The pharmacy delivers ganciclovir 375 mg in a 150 mL IV bag. How many mL/hour should the nurse program the infusion pump? (Enter a whole number only.)
The healthcare provider prescribes cefazolin 800 mg IM every six hours. The available vial is labeled, 'Cefazolin 1 gram,' and the instructions for reconstitution state, For IM use add 2.5 mL sterile water for injection to provide a total volume of 3.0 mL'. After reconstitution, the solution contains how many mg/mL? (Enter numeric value only. If rounding is required, round to the nearest whole number.)
A client returns from the PACU with a bag of IV fluids that has 630 mL remaining in the 1,000 mL bag. The prescription reads, 'Continue the present IV over the next 7 hours.' The IV administration set delivers 10 gtt/mL. The nurse should regulate the infusion to deliver how many drops/minute to accomplish the new prescription? (Enter numeric value only.)
The healthcare provider prescribes lamivudine oral solution 150 mg twice daily for a client who is HIV positive. The available bottle contains 240 mL of lamivudine labeled, '10 mg/mL.' How many mL should the nurse administer in a 24 hour period? (Enter numeric value only.)

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