Which term means the point at which a medication has the optimal desired effect?
Therapeutic level
therapeutic index
Toxic level
Therapeutic range
The Correct Answer is A
A. Therapeutic level: This is the correct answer. It refers to the concentration of a drug in the bloodstream at which it achieves the desired effect without causing toxicity.
B. Therapeutic index: This is a ratio that compares the toxic dose to the therapeutic dose of a drug. It does not refer to the point of optimal effect.
C. Toxic level: This refers to the concentration of a drug at which it becomes harmful or toxic. It is not associated with the desired effect.
D. Therapeutic range: This refers to the range between the minimum effective concentration and the toxic concentration of a drug. It does not pinpoint the optimal effect but indicates the safe range.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Therapeutic level: This is the correct answer. It refers to the concentration of a drug in the bloodstream at which it achieves the desired effect without causing toxicity.
B. Therapeutic index: This is a ratio that compares the toxic dose to the therapeutic dose of a drug. It does not refer to the point of optimal effect.
C. Toxic level: This refers to the concentration of a drug at which it becomes harmful or toxic. It is not associated with the desired effect.
D. Therapeutic range: This refers to the range between the minimum effective concentration and the toxic concentration of a drug. It does not pinpoint the optimal effect but indicates the safe range.
Correct Answer is C
Explanation
A. A medication that supports physiological well-being: A placebo does not have active therapeutic effects and is used in research, not for direct physiological support.
B. Medication designed to have more benefits than risks: This statement refers to a drug with a favorable benefit-risk profile, not a placebo.
C. An inactive substance that is used for comparison in drug studies: This is the correct definition of a placebo. It is an inactive substance that has no therapeutic effect, used to compare against the active drug in clinical trials.
D. The active ingredient in a drug preparation: This statement describes the component responsible for the therapeutic effect of a drug, not a placebo.
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