A 2 g vial is added to 500 mL IV fluid administered at 125 mL/hour. Assuming a constant infusion rate, what dose of cefalotin does the patient receive per minute?

Home › MCQs › OPRA Pharmacokinetics and Pharmacodynamics › Question #3837

OPRA Pharmacokinetics and Pharmacodynamics QUESTION #3837

Question 1

A $2$ g vial is added to $500$ mL IV fluid administered at $125$ mL/hour. Assuming a constant infusion rate, what dose of cefalotin does the patient receive per minute?

$8.33$ mg✔️
$83.3$ mg
$500$ mg
$833$ mg

Correct Answer Explanation

Concentration $= \dfrac{2000\ \text{mg}}{500\ \text{mL}} = 4\ \text{mg/mL}$. Rate $= \dfrac{125\ \text{mL/hr}}{60} = 2.083\ \text{mL/min}$. Dose/min $= 2.083 \times 4 = 8.33\ \text{mg/min}$.

More Options