A nurse is preparing to administer diazepam 4 mg IV bolus stat. Available is diazepam injection 5 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth.)

Calculation steps: Step 1: Identify the dosage required. 4 mg Step 2: Identify the concentration available. 5 mg/mL Step 3: Calculate the volume to be administered. 4 mg ÷ 5 mg/mL Result: 0.8 mL