Question

Heparin 5,000 units IV is prescribed as a loading dose, to be administered over 5 minutes for a client with thrombophlebitis. The vial is labeled, "10,000 units/mL." How many ml. should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

Answer 1

Correct Answers:

0.5

Rationale :

💉The vial contains 10,000 units/mL of heparin.

🧮To give 5,000 units: 5,000 ÷ 10,000 = 0.5 mL.

📏Since the dose is to be given over 5 minutes, no rate adjustment is needed here.

🩺Accurate dosing prevents complications like bleeding or underdosing.

📌Core Message

Divide prescribed units by available concentration to find the correct mL to administer.

Answer 2

Correct Answers:

4.7

Rationale :

🧪The reconstituted concentration is 30 mg/mL.

🧮140 ÷ 30 = 4.67, which rounds to 4.7 mL.

💉Administering the correct volume ensures therapeutic drug levels.

📦Always round to the nearest tenth only if instructed.

📌Core Message

Divide the prescribed dose by concentration to determine mL to give.

Answer 3

Correct Answers:

100

Rationale :

🕒The total volume is 150 mL over 90 minutes.

🧮Convert 90 minutes to hours: 90 ÷ 60 = 1.5 hours.

📏150 ÷ 1.5 = 100 mL/hr.

💊Set the infusion pump to 100 mL/hr for safe delivery.

📌Core Message

Divide total volume by hours to get pump rate in mL/hr.

Answer 4

Correct Answers:

3

Rationale :

💊The prescribed dose is 120 mg of furosemide.

📏Recommended rate: 40 mg/min → 120 ÷ 40 = 3 minutes.

💉Slow IV push prevents ototoxicity or hypotension.

🕒Always check administration guidelines for rate limits.

📌Core Message

Divide total dose by mg/min rate to find administration time.

Answer 5

Correct Answers:

1

Rationale :

📦Midazolam available: 4 mg/2 mL → 2 mg/mL.

🧮2 ÷ 2 = 1 mL.

💉Administer 1 mL for the prescribed 2 mg.

📏Using the correct volume ensures safe procedural sedation.

📌Core Message

Divide prescribed dose by available concentration to get mL to administer.

Answer 6

Correct Answers:

2.4

Rationale :

🧨Reconstituted vial: 1 gram (1,000 mg) in 3.0 mL.

💁‍♂️800 ÷ 1,000 = 0.8 → 0.8 × 3.0 = 2.4 mL.

💉Administer 2.4 mL for an 800 mg dose.

📏Precision in reconstituted drugs is essential for IM effectiveness.

📌Core Message

Find the fractional dose of full vial, then multiply by total mL to get the amount to draw.

Answer 7

Correct Answers:

0.9

Rationale :

📦Hydromorphone: 10 mg/mL → 4 ÷ 10 = 0.4 mL.

🔵Hydroxyzine: 50 mg/mL → 25 ÷ 50 = 0.5 mL.

🧮0.4 + 0.5 = 0.9 mL total.

📌Core Message

Use dose ÷ concentration for each drug, then add both volumes for total mL.

Answer 8

Correct Answers:

440

Rationale :

📦Pantoprazole: 110 mL over 15 minutes.

🧮15 ÷ 60 = 0.25 hours.

📏110 ÷ 0.25 = 440 mL/hr.

💉Set secondary pump to 440 mL/hr for correct infusion timing.

📌Core Message

Divide volume by time in hours to find pump setting for secondary infusion.

Answer 9

Correct Answers:

16

Rationale :

📆800 mg every 6 hours = 4 doses/day.

💊Each tablet is 400 mg → 800 ÷ 400 = 2 tablets/dose.

🧮2 × 4 = 8 tablets/day.

📅Over 24 hours: 8 tablets × 2 days = 16 tablets in total.

📌Core Message

Multiply tablets per dose by daily frequency to get total daily tablets.

Answer 10

Correct Answers:

60

Rationale :

⚖️66 lb ÷ 2.2 = 30 kg.

💊2 mg/kg × 30 = 60 mg/dose.

🧪Gentamicin dosing requires weight-based calculation.

🧾Ensure accurate dosing to prevent renal toxicity or underdosing.

📌Core Message

Convert to kg, then multiply by mg/kg to get the dose in mg.

HESI RN Dosage Calculation 2024 Exam-4

No.

1 :
Heparin 5,000 units IV is prescribed as a loading dose, to be administered over 5 minutes for a client with thrombophlebitis. The vial is labeled, "10,000 units/mL." How many ml. should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

3 :
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.)

5 :
A client receives a prescription for a single dose of midazolam 2 mg IV to be administer before a scheduled procedure. The vial is label, "4 mg/2 mL." How many mL should the nurse administer? (Enter numerical value only.)

9 :
The healthcare provider prescribes acyclovir 800 mg by mouth (PO) every 6 hours for an adolescent with chicken pox. The medication is available in 400 mg tablets PO. How many tablets should the nurse administer to the client every 24 hours? (Enter the numeric value only.)

10 :
A 9-year-old child who weighs 66 lb is to receive gentamicin sulfate 2 mg/kg/dose every 8 hours for an Escherichia coli urinary tract infection. How many mg per dose should this child receive? (Enter numeric value only.)

HESI RN Dosage Calculation 2024 Exam-4

No.

1 : Heparin 5,000 units IV is prescribed as a loading dose, to be administered over 5 minutes for a client with thrombophlebitis. The vial is labeled, "10,000 units/mL." How many ml. should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

3 : 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.)

5 : A client receives a prescription for a single dose of midazolam 2 mg IV to be administer before a scheduled procedure. The vial is label, "4 mg/2 mL." How many mL should the nurse administer? (Enter numerical value only.)

9 : The healthcare provider prescribes acyclovir 800 mg by mouth (PO) every 6 hours for an adolescent with chicken pox. The medication is available in 400 mg tablets PO. How many tablets should the nurse administer to the client every 24 hours? (Enter the numeric value only.)

10 : A 9-year-old child who weighs 66 lb is to receive gentamicin sulfate 2 mg/kg/dose every 8 hours for an Escherichia coli urinary tract infection. How many mg per dose should this child receive? (Enter numeric value only.)

1 :
Heparin 5,000 units IV is prescribed as a loading dose, to be administered over 5 minutes for a client with thrombophlebitis. The vial is labeled, "10,000 units/mL." How many ml. should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

3 :
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.)

5 :
A client receives a prescription for a single dose of midazolam 2 mg IV to be administer before a scheduled procedure. The vial is label, "4 mg/2 mL." How many mL should the nurse administer? (Enter numerical value only.)

9 :
The healthcare provider prescribes acyclovir 800 mg by mouth (PO) every 6 hours for an adolescent with chicken pox. The medication is available in 400 mg tablets PO. How many tablets should the nurse administer to the client every 24 hours? (Enter the numeric value only.)

10 :
A 9-year-old child who weighs 66 lb is to receive gentamicin sulfate 2 mg/kg/dose every 8 hours for an Escherichia coli urinary tract infection. How many mg per dose should this child receive? (Enter numeric value only.)