Practice Question
A client 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/hr should the nurse program the infusion pump to deliver? (Enter numeric value only. If rounding is required, round to the nearest tenth).
Answer Choices:
Correct Answer:
10.2
Rationale:
🔴Prescribed dose: 3 mcg/kg/min
🔴Client weight: 91 kg
🔴 IV solution concentration: 400 mg in 250 mL
🔴Note: 1 mg = 1,000 mcg
400 mg = 400,000 mcg
🔴 Step 1: Calculate total mcg/min needed:
3 mcg/kg/min×91 kg
273 mcg/min
🔴 Step 2: Calculate concentration in mcg/mL:
400,000 mcg/250 mL
1600 mcg/mL
🔴 Step 3: Calculate mL/min needed:
273 mcg/min/1600 mcg/mL
0.1706 mL/min
🔴 Step 4: Convert mL/min to mL/hr:
0.1706×60
10.24 mL/hr
🔴 Step 5: Round to the nearest tenth:
10.2 mL/hr
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This question is from HESI-RN Dosage Exam VI which contains 50 questions.
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Question Details
- Category: RN Nursing Exam(s)
- Subcategory: HESI Exam(s)
- Domain: Hesi Dosage Calculations
- Answer Choices: 1