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    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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