A nurse is preparing to administer metoprolol 5 mg IV bolus to a client for heart rate control. Available is metoprolol injection 1 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero it applies. Do not use a trailing zero.)

Given: Desired dose: Metoprolol 5 mg IV bolus Available concentration: Metoprolol injection 1 mg/mL To find: Volume to administer per dose (in mL) Step 1: Set up the proportion (Desired dose) / (Available concentration) = Volume to administer Step 2: Substitute the values Plugging in the given values, we get: (5 mg) / (1 mg/mL) = Volume to administer Step 3: Simplify To simplify, we can invert the denominator and multiply: (5 mg) x (1 mL / 1 mg) = Volume to administer The "mg" units cancel out, leaving us with: (5 x 1 mL) / 1 = Volume to administer Step 4: Calculate Performing the multiplication and division, we get: 5 mL / 1 = Volume to administer 5 mL = Volume to administer