Question

Give "Drug X" 5.0 mg/kg per day in two divided doses. The patient weighs 53 lb . How many mg should be given per dose? How many mg should be given per day?

Answer 1

26.5 doses of drug it will make sense.

Answer 2

Answer : The amount of drug X given per day should be 120.2 mg.

The amount of drug X given per dose should be 60.1 mg.

Explanation :

First we have to convert the weight of patient from lb to kg.

Conversion used :

`1kg=2.205lb`

or,

`1lb=(1)/(2.205)kg`

As,
`1lb=(1)/(2.205)kg`

So,
`53lb=(53)/(2.205)kg=24.04kg`

The weight of patient is, 24.04 kg.

Now we have to determine the amount of drug X should be given per day.

As, 1 kg weight of patient contains 5.0 mg of drug X per day

So, 24.04 kg weight of patient contains 24.04 × 5.0 = 120.2 mg of drug X per day

The amount of drug X given per day should be 120.2 mg.

Now we have to determine the amount of drug X should be given per dose.

In 2 doses, the patient contains 120.2 mg of drug X

In 1 dose, the patient contains
`(120.2)/(2)=60.1mg` of drug X

The amount of drug X given per dose should be 60.1 mg.