A nurse is preparing to administer lorazepam 50 mcg/kg IM to a client who weighs 176 lb. Available is lorazepam 4 mg/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: Convert the client's weight from pounds (lb) to kilograms (kg). Weight in kg = 176 lb / 2.2 lb/kg = 80 kg Calculate the total desired dose in micrograms (mcg). Desired dose (mcg) = Desired dose (mcg/kg) × Weight (kg) = 50 mcg/kg × 80 kg = 4000 mcg Convert the desired dose from micrograms (mcg) to milligrams (mg). Desired dose (mg) = Desired dose (mcg) / 1000 mcg/mg = 4000 mcg / 1000 mcg/mg = 4 mg Identify the available concentration. = 4 mg/mL Calculate the volume in milliliters (mL) to administer. Volume (mL) = Desired dose (mg) / Available concentration (mg/mL) = 4 mg / 4 mg/mL = 1 mL Round the answer to the nearest whole number: 1.