RN Comprehensive Predictor 2026 Proctored Exam
Calculation
A nurse is preparing to administer labetalol 40 mg IV to a client. Available is labetalol 5 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
mL
Explanation & Rationale
Step 1: Identify desired dose and concentration Desired dose = 40 mg, Concentration = 5 mg/mL Step 2: Use the formula Volume (mL) = Desired dose ÷ Concentration Step 3: Insert values = 40 ÷ 5 Step 4: Calculate = 8 mL
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