Bioavailability refers to the proportion of a drug dose that:
Correct answer: A. Reaches the systemic circulation unchanged
- A. Reaches the systemic circulation unchanged
- B. Binds to plasma proteins in the blood
- C. Is removed from the body by the kidneys
- D. Produces the maximum therapeutic response
Explanation
Bioavailability is the fraction of an administered dose that reaches systemic circulation in an active form. Intravenous drugs have complete bioavailability, while oral drugs may lose some dose through incomplete absorption or first-pass metabolism.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Principles of Pharmacology
Pharmacology examines drug sources, names, dosage forms, mechanisms of action, absorption, distribution, metabolism and excretion. Questions cover pharmacokinetics versus pharmacodynamics, therapeutic effects, adverse reactions, contraindications, drug interactions, tolerance, dependence and the safety responsibilities of the nurse.
Practise Principles of Pharmacology
50 free Principles of Pharmacology MCQs from Nursing Pharmacology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Nursing Pharmacology questions like this
Nursing Pharmacology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Principles of Pharmacology questions
A nurse notices that a medication label is difficult to read and the expiry date cannot be confirmed. What is the safest action?
Which finding best suggests that a drug is producing a toxic effect rather than its intended therapeutic effect?
A patient is unable to swallow safely and has an oral medication prescribed in tablet form. What should the nurse do first?
A prescriber orders a loading dose of a medicine. What is the main purpose of this dose?
A patient has received the same dose of a medicine at regular intervals for several days. Which finding best indicates that a steady state has been reached?
A patient taking a medicine metabolised by liver enzymes begins another medicine that inhibits those enzymes. Which effect is most likely?