A dehydrated child has intravenous aid therapy ordered. The child weighs 10 kg. Physician ordered Lactated Ringer's solution 40 ml/kg over 4 hours How many miles per hour will this child receive?

The correct answer is B: 100 mL/hour. To calculate the IV rate, we first multiply the weight of the child (10 kg) by the ordered rate (40 ml/kg) which gives us 400 ml over 4 hours. To convert this to ml per hour, we divide 400 ml by 4 hours, resulting in 100 ml/hour. This calculation ensures the child receives the correct amount of fluid over the specified time frame. Other choices are incorrect because they do not follow the correct calculation method or do not align with the physician's order.