Question

A patient is to be given 35 milligrams of Demerol every 4 hours. You have Demerol 50 milligrams/milliliter in stock. How many milliliters should be given per dose?

Answer 1

0.7 milliliter

Explanation:

We have Demerol 50 milligrams/milliliter in stock and a patient is to be given 35 milligrams of Demerol every 4 hours.

So we can use the simple ratio method to find the number of milliliters that should be given per dose.

`(1 milliliter)/(x) = \frac{50 milligrams} {35 milligrams}`

`x=(35)/(50)`

`x=0.7`

Therefore, every dose of Demerol of 0.7 milliliter should be given to the patient.

Answer 2

It should be given 0.7 milliliters of Demerol (50 milligrams/millilitre) per dose.

Explanation:

You have Demerol 50 milligrams/milliliter in stock, and the patient is to be given 35 milligrams of Demerol every 4 hours (per dose), then we can use a rule of three:

Milliliter Milligrams

1 → 50

x → 35

`x=((35 mg)(1 ml))/(50 mg)\\ x=(35)/(50)ml\\ x=0.7 ml`