To reach a target steady-state concentration Css, what is the required infusion rate?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare thoroughly for the MDC Pharmacokinetics Exam with our detailed guidance. Utilize flashcards and multiple-choice questions, complete with hints and explanations, to excel in your test!

Multiple Choice

To reach a target steady-state concentration Css, what is the required infusion rate?

Explanation:
At steady state, the rate of drug entering the system must equal the rate being eliminated. The elimination rate for linear pharmacokinetics is the clearance times the target concentration, rate_out = Cl × Css. Setting input equal to elimination gives Rate_in = Css × Cl. This aligns with units: Css (mg/L) times Cl (L/h) gives mg/h, a proper infusion rate. This only holds for constant-rate infusion with linear kinetics and constant clearance. Using other factors like Q (blood flow) or dividing by Css would misrepresent the balance or produce incorrect units, so they don’t fit.

At steady state, the rate of drug entering the system must equal the rate being eliminated. The elimination rate for linear pharmacokinetics is the clearance times the target concentration, rate_out = Cl × Css. Setting input equal to elimination gives Rate_in = Css × Cl. This aligns with units: Css (mg/L) times Cl (L/h) gives mg/h, a proper infusion rate. This only holds for constant-rate infusion with linear kinetics and constant clearance. Using other factors like Q (blood flow) or dividing by Css would misrepresent the balance or produce incorrect units, so they don’t fit.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy