Question

An infant was admitted to the hospital and was ordered morphine 0.1 mg/kg every 8 hours. If the infant weighs 22 lb, what dose of morphine will he receive?

a) 1 mg

b) 2 mg

c) 3 mg

d) 4 mg

Answer 1

To calculate the morphine dose for a 22 lb infant at 0.1 mg/kg, we convert the weight to kilograms and then calculate the dose to be approximately 1 mg.

Step-by-step explanation:

The question asks us to calculate the dose of morphine for an infant based on the prescribed dosage of 0.1 mg/kg every 8 hours. Since the infant weighs 22 lb, we first need to convert pounds to kilograms. We use the conversion factor of 1 kilogram = 2.20462 pounds.

First, calculate the infant's weight in kilograms:
22 lb * (1 kg / 2.20462 lb) ≈ 9.98 kg

Then, calculate the morphine dose:
0.1 mg/kg * 9.98 kg = 0.998 mg

The dose is approximately 1 mg, so the correct answer is: a) 1 mg.