Question

The healthcare provider prescribes filgrastim 5 mcg/kg SUBQ for a client who weighs 176 pounds. The available vial is labeled, filgrastim 300 mcg/mL. Based on the client's weight, how many milliliters should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)

Answer 1

Correct Answers:

1.3

Rationale :

⚖️176 lb ÷ 2.2 = 80 kg → 80 × 5 = 400 mcg.

📏The vial is labeled 300 mcg/mL, so 400 ÷ 300 = 1.3 mL.

💉This ensures the correct subcutaneous dose of filgrastim is given based on the client’s weight.

⚠️Filgrastim is weight-based and precise dosing is necessary to avoid underdosing or adverse effects.

📌Core Message

Convert pounds to kg, apply mcg/kg dosing, and divide by concentration in mcg/mL.

Answer 2

Correct Answers:

6.0

Rationale :

⚖️132 lb ÷ 2.2 = 60 kg → 60 × 5 = 300 mg.

📏Reconstituted concentration is 50 mg/mL.

💁‍♂️So 300 ÷ 50 = 6.0 mL.

💉This provides the correct IV dose of dantrolene, a critical drug in treating neuroleptic malignant syndrome.

📦Accurate reconstitution and conversion ensure the prescribed dose is delivered effectively.

📌Core Message

Convert weight to kg, multiply by mg/kg, then divide by mg/mL concentration to get dose volume.

Answer 3

Correct Answers:

1250

Rationale :

⚖️55 lb ÷ 2.2 = 25 kg → 25 × 300 = 7,500 mg/day.

🕓The dose is divided every 4 hours.

💁‍♂️Which is 6 doses/day → 7,500 ÷ 6 = 1,250 mg/dose.

📏However, the question asks how many mg per dose, not per day.

💉Each dose should be 1,250 mg.

📌Core Message

Determine total daily mg, then divide by dosing intervals to get per-dose amount.

Answer 4

Correct Answers:

0.3

Rationale :

📏30 mg/3 mL = 10 mg/mL → 3 mg ÷ 10 = 0.3 mL.

💉This dose delivers the correct subcutaneous amount of apomorphine hydrochloride.

🧪Precision in measurement is critical in Parkinson’s disease management due to sensitivity to medication levels.

⚠️Always match the prescribed dose to the concentration provided in prefilled syringes.

📌Core Message

Use mg ÷ mg/mL to calculate the volume from prefilled syringes.

Answer 5

Correct Answers:

83

Rationale :

💧20 million units in 2,000 mL over 24 hours = 2,000 mL ÷ 24 hr = 83.3 ≈ 83 mL/hr.

📏Infusion rate must match prescribed total volume over the ordered time frame.

📦Pharmacy already supplied the solution at 10 million units/L, matching the prescription.

⚠️Using the correct hourly rate ensures consistent therapeutic blood levels of penicillin G.

📌Core Message

For continuous infusions, divide total mL by total hours to find mL/hr.

Answer 6

Correct Answers:

10.2

Rationale :

⚖️91 kg × 3 mcg = 273 mcg/min → 273 × 60 = 16,380 mcg/hr = 16.38 mg/hr.

📏Dopamine concentration is 400 mg in 250 mL = 1.6 mg/mL.

🧮16.38 ÷ 1.6 = 10.24 ≈ 10.2 mL/hr.

⚠️Correct answer based on all data is 10.2 mL/hr

📌Core Message

Convert mcg to mg/hr, then divide by concentration (mg/mL) to find mL/hr rate.

Answer 7

Correct Answers:

100

Rationale :

📏150 mL over 90 minutes = 150 ÷ 1.5 = 100 mL/hr.

💉The IV pump should deliver at this rate to ensure the medication infuses over the ordered time frame.

⚠️Accurate rate calculations prevent over-infusion or under-dosing, especially for antivirals.

🧪The formula is based on volume ÷ time (in hours).

📌Core Message

Divide mL by hours to get correct IV pump setting.

Answer 8

Correct Answers:

1.5

Rationale :

📏7.5 mg needed → 5 mg/mL concentration → 7.5 ÷ 5 = 1.5 mL.

💉This ensures accurate IM dose of metoclopramide, particularly important for PRN use.

📦Use precise syringe measurements to avoid medication errors with decimal doses.

🧪Volume is calculated by dividing prescribed dose by the concentration.

📌Core Message

Use mg ÷ mg/mL to find volume for IM administration.

Answer 9

Correct Answers:

1.0

Rationale :

📏2 mg needed → Reconstituted to 2 mg/mL → 2 ÷ 2 = 1.0 mL.

💉Warfarin must be precisely measured to avoid bleeding complications.

📦Ensure vial is properly reconstituted before calculating dose.

🧪The concentration guide simplifies the dose-to-volume calculation.

📌Core Message

Divide dose needed by final concentration to get volume to draw.

Answer 10

Correct Answers:

1.8

Rationale :

⚖️30 kg × 0.3 mg = 9 mg → 9 ÷ 5 mg/mL = 1.8 mL.

💉This STAT IV dose of diazepam helps manage acute seizure activity.

📦Doses for pediatric seizures are always weight-based and must be measured precisely.

🧪Calculation includes both weight-based dose and mL conversion.

📌Core Message

For pediatric IV doses, calculate mg by weight, then convert to mL using drug concentration.

HESI RN Dosage Calculation 2024 Exam-5

No.

3 :
A child weighing 55 pounds is receiving ampicillin 300 mg/kg/24 hours intravenously (IV) in equally divided doses every 4 hours. How many mg should the nurse administer to the child for each dose? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

7 :
The healthcare provider prescribes cytovene 375 mg every 12 hours to infuse over, 90 minutes. The pharmacy delivers cytovene 375 mg in a 150 mL IV bag. How many mL/hour should the nurse program the infusion pump? (Enter a whole number only.)

HESI RN Dosage Calculation 2024 Exam-5

No.

3 : A child weighing 55 pounds is receiving ampicillin 300 mg/kg/24 hours intravenously (IV) in equally divided doses every 4 hours. How many mg should the nurse administer to the child for each dose? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

7 : The healthcare provider prescribes cytovene 375 mg every 12 hours to infuse over, 90 minutes. The pharmacy delivers cytovene 375 mg in a 150 mL IV bag. How many mL/hour should the nurse program the infusion pump? (Enter a whole number only.)

3 :
A child weighing 55 pounds is receiving ampicillin 300 mg/kg/24 hours intravenously (IV) in equally divided doses every 4 hours. How many mg should the nurse administer to the child for each dose? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

7 :
The healthcare provider prescribes cytovene 375 mg every 12 hours to infuse over, 90 minutes. The pharmacy delivers cytovene 375 mg in a 150 mL IV bag. How many mL/hour should the nurse program the infusion pump? (Enter a whole number only.)