An infant is admitted with a primary diagnosis of bronchiolitis, and a secondary diagnosis of dehydration. The nurse begins to prepare the intravenous fluids at double maintenance to rehydrate the infant, who weighs 8.2 kg. Using the 4-2-1 formula calculate the client's intravenous flow rate per hour. Round to the nearest whole number. Record numerical answer only.

Step 1 is to calculate the maintenance fluid rate for the first 10 kg of body weight. The infant weighs 8.2 kg, which is less than 10 kg. (8.2 kg) × (4 mL/kg/hr) = 32.8 mL/hr. Step 2 is to multiply the maintenance rate by 2 to achieve the double maintenance rate for rehydration. (32.8 mL/hr) × 2 = 65.6 mL/hr. Step 3 is to round the flow rate to the nearest whole number. 66 mL/hr. The client's intravenous flow rate per hour is 66.