A patient develops an unusual and unpredictable response to a usual dose of a medicine, although the patient has no known allergy. Which type of reaction is this?
Correct answer: A. Idiosyncratic reaction
- A. Idiosyncratic reaction
- B. Therapeutic effect
- C. Cumulative effect
- D. Withdrawal reaction
Explanation
An idiosyncratic reaction is an uncommon, unpredictable response that differs from the expected drug effect. A therapeutic effect is intended, a cumulative effect results from repeated doses, and withdrawal follows stopping a drug after regular use.
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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.
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