An client who weighs 160 pounds receives a prescription for gentamicin 5 mg/kg/day IV in divided doses every 8 hours. How many mg should the nurse administer with each dose? (Enter numerical value only. If rounding is required, round to the nearest whole number.)

1. Convert pounds to kilograms: 160 pounds / 2.2 pounds/kg = 72.7 kg (approximately 73 kg) 2. Calculate the total daily dose: Total daily dose = 5 mg/kg/day * 72.7 kg = 363.6 mg/day 3. Calculate the single dose: Since the medication is to be administered every 8 hours (three times a day), divide the total daily dose by 3: Single dose = 363.6 mg/day / 3 doses = 121.2 mg/dose 4. Round to the nearest whole number: Single dose = 121 mg Therefore, the nurse should administer 121 mg of gentamicin with each dose.