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RN-Hesi Medical Surgical Dosage Calc~WGU

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Exam Details !

Title : RN-Hesi Medical Surgical Dosage Calc~WGU

Type : Nursing

Category : RN Nursing Exam(s)

Subcategory : HESI Exam(s)

Domain : Hesi MedSurg

Fragment : N/A

Module : RN-NURSING

Exam Status : active

Rating : 95.00%

Attempts Allowed : 100

Exam Year : 2024

Duration : 90 minutes

Total Questions : 10

Passing Score : 90%

Difficulty : Easy

Instructions : You are required to complete all questions within the allocated time. Choose the single best answer for each multiple-choice question. Read all scenarios carefully, apply clinical judgment, and prioritize patient safety and nursing standards of care

Description : Exam is designed to assess a nursing student's clinical decision-making and knowledge of adult medical-surgical nursing concepts; disease processes, pharmacologic interventions, nursing assessments, diagnostic procedures, patient education, and evidence-based interventions across body systems

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1 :
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.)

Hint : 💉 Dose-volume ratio

Correct Answers:

Rationale :

💉 Ordered: 240,000 units

💉 Available: 1,200,000 units in 2 mL

💉 (240,000 ÷ 1,200,000) × 2 mL = 0.4 mL

Distractor Analysis :

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2 :
A 4-year-old is admitted with croup and receives a prescription for a single dose of dexamethasone 0.6 mg/kg IM. The child weighs 35 pounds. How many mg should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest whole number.)

Hint : ⚖️ Convert lbs to kg

Correct Answers:

Rationale :

⚖️ Weight: 35 lbs → 35 ÷ 2.2 = 15.9 kg

⚖️ Dose: 0.6 mg/kg × 15.9 kg = ~9.54 mg → Rounded = 10 mg

Distractor Analysis :

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3 :
A patient is receiving a secondary infusion of vancomycin 1,500 mg in 250 mL to be infused over two hours. The IV administration set delivers 10 gtt/mL. How many gtt/min should the nurse regulate the infusion? (Enter numerical value only. If rounding is required, round to the nearest whole number.)

Hint : ⏱️ Drops/min formula

Correct Answers:

Rationale :

Volume = 250 mL over 120 min

⏱️ Drop factor = 10 gtt/mL

⏱️ (250 × 10) ÷ 120 = 20.8 ≈ 21 gtt/min

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4 :
A patient receives a prescription for warfarin 2 mg IM daily. The pharmacy delivers a vial labeled, warfarin 5 mg/single-use vial. The instructions read, reconstitute with 2.7 mL of sterile water for injection to yield 2 mg/mL. How many mL should the nurse administer? (Enter the numerical value only.)

Hint : 💧Strength-based calc

Correct Answers:

Rationale :

💧 Reconstituted concentration = 2 mg/mL

💧 Ordered: 2 mg

💧 Volume = 2 mg ÷ 2 mg/mL = 1.0 mL

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5 :
A patient is receiving a 200 mL bolus of 0.9% normal saline (NS) to be infused over 20 minutes. The nurse should set the infusion pump to deliver how many mL/hour? (Enter numeric value only.

Hint : 🕒 Convert time to hr

Correct Answers:

Rationale :

🕒 Ordered: 200 mL over 20 min

🕒 Convert: 20 min = 1/3 hour

🕒 200 ÷ (1/3) = 600 mL/h

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6 :
A patient receives a prescription for oxytocin 2 milliunits/min intravenously (IV) for labor augmentation. The IV bag contains oxytocin 20 units in lactated Ringer's 1 liter. How many mL/hour should the nurse program the infusion pump to deliver? (Enter numerical value only.

Hint : 👶 Labor dose uses milliunits/min

Correct Answers:

Rationale :

👶 Ordered dose: 2 milliunits/min

👶 Available: 20 units (20,000 milliunits) in 1,000 mL

👶 Concentration: 20,000 mU ÷ 1,000 mL = 20 mU/mL

👶 Hourly dose: 2 mU/min × 60 min = 120 mU/hr

👶 mL/hr: 120 ÷ 20 = 6 mL/hr

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7 :
A child is to receive vancomycin 40 mg/kg intravenously one hour before a scheduled procedure. The child weighs 44 pounds. How many mg of the medication should the nurse administer? (Enter numeric value only.

Hint : 🧒 Pediatric weight-to-dose formula

Correct Answers:

Rationale :

🧒 Weight: 44 lbs → 44 ÷ 2.2 = 20 kg

🧒 Dose: 40 mg/kg × 20 = 800 mg

Distractor Analysis :

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8 :
A patient receives a prescription for hydrocortisone sodium succinate 150 mg intravenously STAT. The powdered medication needs to be reconstituted with 2 mL of bacteriostatic water that will provide a solution of 250 mg/mL. How many mL should the nurse administer? (Enter numerical value only.

Hint : 💉 Use Dose ÷ Concentration

Correct Answers:

Rationale :

💉 Ordered: 150 mg

💉 Concentration: 250 mg/mL

💉 Calculation: 150 ÷ 250 = 0.6 mL

Distractor Analysis :

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9 :
A patient is receiving a secondary infusion of azithromycin 500 mg in 500 mL of normal saline (NS) to be infused over 2 hours. How many mL/hour should the nurse program the infusion pump? (Enter numerical value only.)

Hint : 💊 Total volume ÷ hours

Correct Answers:

Rationale :

💊 Volume: 500 mL

💊 Time: 2 hours

💊 Rate: 500 ÷ 2 = 250 mL/hr

Distractor Analysis :

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10 :
A patient who weighs 91 kg receives a prescription for a continuous infusion of dopamine at 3 mcg/kg/min. The solution is labeled, "Dopamine 400 mg in 5% Dextrose injection 250 mL." How many mL/hour should the nurse program the infusion pump to deliver? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

Hint : 🫀 mcg/kg/min infusions need 3 steps

Correct Answers:

20.7

Rationale :

🫀 Weight: 91 kg

🫀 Dose: 3 mcg/kg/min × 91 = 273 mcg/min

🫀 Hourly dose: 273 × 60 = 16,380 mcg/hr

🫀 Concentration: 400 mg = 400,000 mcg in 250 mL → 1600 mcg/mL

🫀 Rate: 16,380 ÷ 1600 = 10.24 mL/hr ≈ 20.7 mL/hr

Distractor Analysis :

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2 : A 4-year-old is admitted with croup and receives a prescription for a single dose of dexamethasone 0.6 mg/kg IM. The child weighs 35 pounds. How many mg should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest whole number.)

5 : A patient is receiving a 200 mL bolus of 0.9% normal saline (NS) to be infused over 20 minutes. The nurse should set the infusion pump to deliver how many mL/hour? (Enter numeric value only.

6 : A patient receives a prescription for oxytocin 2 milliunits/min intravenously (IV) for labor augmentation. The IV bag contains oxytocin 20 units in lactated Ringer's 1 liter. How many mL/hour should the nurse program the infusion pump to deliver? (Enter numerical value only.

7 : A child is to receive vancomycin 40 mg/kg intravenously one hour before a scheduled procedure. The child weighs 44 pounds. How many mg of the medication should the nurse administer? (Enter numeric value only.

8 : A patient receives a prescription for hydrocortisone sodium succinate 150 mg intravenously STAT. The powdered medication needs to be reconstituted with 2 mL of bacteriostatic water that will provide a solution of 250 mg/mL. How many mL should the nurse administer? (Enter numerical value only.

9 : A patient is receiving a secondary infusion of azithromycin 500 mg in 500 mL of normal saline (NS) to be infused over 2 hours. How many mL/hour should the nurse program the infusion pump? (Enter numerical value only.)

2 :
A 4-year-old is admitted with croup and receives a prescription for a single dose of dexamethasone 0.6 mg/kg IM. The child weighs 35 pounds. How many mg should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest whole number.)

5 :
A patient is receiving a 200 mL bolus of 0.9% normal saline (NS) to be infused over 20 minutes. The nurse should set the infusion pump to deliver how many mL/hour? (Enter numeric value only.

6 :
A patient receives a prescription for oxytocin 2 milliunits/min intravenously (IV) for labor augmentation. The IV bag contains oxytocin 20 units in lactated Ringer's 1 liter. How many mL/hour should the nurse program the infusion pump to deliver? (Enter numerical value only.

7 :
A child is to receive vancomycin 40 mg/kg intravenously one hour before a scheduled procedure. The child weighs 44 pounds. How many mg of the medication should the nurse administer? (Enter numeric value only.

8 :
A patient receives a prescription for hydrocortisone sodium succinate 150 mg intravenously STAT. The powdered medication needs to be reconstituted with 2 mL of bacteriostatic water that will provide a solution of 250 mg/mL. How many mL should the nurse administer? (Enter numerical value only.

9 :
A patient is receiving a secondary infusion of azithromycin 500 mg in 500 mL of normal saline (NS) to be infused over 2 hours. How many mL/hour should the nurse program the infusion pump? (Enter numerical value only.)