A pediatric patient weighs 8 kg. The order is 0.25 mg/kg/hr of a drug. The solution concentration is 5 mg/mL. What is the mL/hr to administer?

Prepare for your Infusion Calculations Test. Study with flashcards and multiple-choice questions, each question comes with hints and explanations. Ready yourself for success!

Multiple Choice

A pediatric patient weighs 8 kg. The order is 0.25 mg/kg/hr of a drug. The solution concentration is 5 mg/mL. What is the mL/hr to administer?

Explanation:
The main idea is to convert a weight-based dose into a flow rate (mL per hour) by first finding how many milligrams are needed each hour, then using the solution’s concentration to translate mg into mL. Calculate the hourly dose: 0.25 mg/kg/hr times 8 kg equals 2 mg per hour. With a concentration of 5 mg/mL, 2 mg corresponds to 2 mg ÷ 5 mg/mL = 0.4 mL per hour. Therefore, the rate to administer is 0.4 mL/hr. If you used 0.8 mL/hr, that would deliver 4 mg/hr, which is not the prescribed amount.

The main idea is to convert a weight-based dose into a flow rate (mL per hour) by first finding how many milligrams are needed each hour, then using the solution’s concentration to translate mg into mL.

Calculate the hourly dose: 0.25 mg/kg/hr times 8 kg equals 2 mg per hour. With a concentration of 5 mg/mL, 2 mg corresponds to 2 mg ÷ 5 mg/mL = 0.4 mL per hour. Therefore, the rate to administer is 0.4 mL/hr. If you used 0.8 mL/hr, that would deliver 4 mg/hr, which is not the prescribed amount.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy