A nurse is preparing to administer lidocaine 50 mg IV bolus. Available is lidocaine 200 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Order: Lidocaine 50 mg IV bolus Supply: Lidocaine 200 mg/mL Use the formula: Volume to administer = Ordered dose ÷ Concentration available Volume = 50 mg ÷ 200 mg/mL Volume = 0.25 mL Round to the nearest tenth: 0.3 mL Final Answer: 0.3 mL