Question

Give 50 mg/kg to a child weighing 56 lbs. The drug is in oral suspension of 100 mg/ml. How many mL would the nurse administer per dose to the child?

Answer 1

About 13 ml

Explanation:

The child weighs 56 lbs. We need to first convert the weight of the child from lbs to kg so that we can know the amount of drug in mg is needed to be given to the child.

1 lb = 0.4536 kg

`56\ lbs=56\ lbs*(0.4536\ kg)/(1\ lb) =25.4\ kg\\\\`

Therefore the amount of mg needed to be administered to the child = 50 mg/kg * 25.4 kg = 1270 mg

Since the oral suspension is in 100 mg per ml, hence:

Amount per dose = 1270 mg / (100 mg/ml) = 12.7 ml ≅ 13 ml

The child should be given 13 ml for each dose.