A nurse is preparing to administer verapamil 10 mg IV bolus. Available is verapamil injection 5 mg/2 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.)

Calculation: Determine the desired dose: Ordered dose: 10 mg Determine the available concentration of the medication: Available concentration: 5 mg / 2 mL Calculate the volume needed to administer the desired dose: Formula: Volume (mL) = Desired dose (mg) × (Volume of solution (mL) / Available dose (mg)) = 10 mg × (2 mL / 5 mg) = 20 mL / 5 = 4 mL