A client who weighs 165 pounds receives a prescription for lorazepam 0.05 mg/kg per IM 2 hours before a scheduled procedure. The medication is available in 4 mg/mL vial. How many mg should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)

Given: Ordered dose of Lorazepam: 0.05 mg/kg Patient weight: 165 pounds Concentration of Lorazepam: 4 mg/mL Step 1: Convert patient weight from pounds to kilograms: 1 pound (lb) = 0.453592 kilograms (kg) Patient weight in kg = 165 lbs x 0.453592 kg/lb = 74.8423 kg Step 2: Calculate the total dose of Lorazepam: Total dose (mg) = Ordered dose (mg/kg) x Patient weight (kg) Total dose (mg) = 0.05 mg/kg x 74.8423 kg Total dose (mg) = 3.742115 mg Step 3: Round to the nearest tenth: Total dose (mg) ≈ 3.7 mg