A client who weighs 76.5 kg is ordered hydromorphone 0.2 mg/kg/day intravenous push divided as needed every 6 hours. Available supply is 1 mg/mL. How many milliliters would the nurse administer in one dose? Round the answer to the nearest tenths place. Record the numeric answer only.

Step 1 is: Calculate the total daily dose in milligrams (mg). 76.5 kg × 0.2 mg/kg/day = 15.3 mg/day. Step 2 is: Calculate the single dose in milligrams (mg) for the every 6 hours schedule. The total daily dose is divided by the frequency of administration (24 hours ÷ 6 hours = 4 doses per day). 15.3 mg ÷ 4 = 3.825 mg/dose. Step 3 is: Calculate the volume to administer in milliliters (mL) using the available concentration (1 mg/mL). 3.825 mg ÷ (1 mg/mL) = 3.825 mL. Step 4 is: Round the answer to the nearest tenths place. 3.825 mL rounds to 3.8 mL. The final calculated answer is 3.8