Practice Question
A client with neuroleptic malignant syndrome receives a prescription for dantrolene 5 mg/kg IV. The client weighs 132 pounds. The label on 250 mg vial reads, "Reconstitute with 5 mL sterile water for injection, USP. Reconstitution yields 50 mg/mL" How many mL should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
Answer Choices:
Correct Answer:
6
Rationale:
🔴Prescribed dose: 5 mg/kg
🔴 Client weight: 132 lb
🔴 Available concentration after reconstitution: 50 mg/mL
🔴 Step 1: Convert pounds to kilograms:
132÷2.2
60 kg
🔴Step 2: Calculate total prescribed dose in mg:
5×60
300 mg
🔴Step 3: Calculate volume to administer using available concentration:
300/50
6 mL
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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