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Questions and Answers
Which of the following best describes the relationship between pharmacokinetics and pharmacodynamics?
Which of the following best describes the relationship between pharmacokinetics and pharmacodynamics?
- Pharmacokinetics describes what the drug does to the body, while pharmacodynamics describes what the body does to the drug.
- Pharmacokinetics studies the side effects of a drug, while pharmacodynamics studies its therapeutic effects.
- Pharmacokinetics describes the movement of the drug through the body, while pharmacodynamics describes the drug's effects on the body. (correct)
- Pharmacokinetics and pharmacodynamics are interchangeable terms describing drug-receptor interactions.
A drug's half-life is the time it takes for:
A drug's half-life is the time it takes for:
- The drug to reach its maximum effect.
- The drug's concentration in the plasma to decrease by half. (correct)
- The drug to be completely eliminated from the body.
- The drug to be completely absorbed into the bloodstream.
What is the most direct implication of a drug having a narrow therapeutic index?
What is the most direct implication of a drug having a narrow therapeutic index?
- The drug is effective for only a narrow range of diseases.
- The drug is only effective when administered via a specific route.
- Small differences in dose or blood concentration may lead to serious therapeutic failures or adverse drug reactions. (correct)
- The drug is rapidly metabolized and requires frequent dosing.
Which route of drug administration generally leads to the most rapid onset of action?
Which route of drug administration generally leads to the most rapid onset of action?
In pharmacokinetics, what does 'bioavailability' refer to?
In pharmacokinetics, what does 'bioavailability' refer to?
What is a 'prodrug'?
What is a 'prodrug'?
A patient with impaired renal function may require a lower dose of a drug primarily to prevent:
A patient with impaired renal function may require a lower dose of a drug primarily to prevent:
Which of the following is an example of a pharmacodynamic drug interaction?
Which of the following is an example of a pharmacodynamic drug interaction?
Genetic polymorphisms affecting drug-metabolizing enzymes (e.g., CYP450 enzymes) can lead to:
Genetic polymorphisms affecting drug-metabolizing enzymes (e.g., CYP450 enzymes) can lead to:
What is the impact of plasma protein binding on drug distribution?
What is the impact of plasma protein binding on drug distribution?
Flashcards
Pharmacokinetics
Pharmacokinetics
The study of what the body does to a drug, including absorption, distribution, metabolism, and excretion (ADME).
Pharmacodynamics
Pharmacodynamics
The study of what a drug does to the body, involving receptor binding, signal transduction, and physiological effects.
Clinical Reasoning
Clinical Reasoning
Process of using clinical knowledge and patient information to make informed decisions about treatment.
Individualizing Treatment
Individualizing Treatment
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Monitoring Treatment
Monitoring Treatment
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Absorption, Distribution, Metabolism, Excretion
Absorption, Distribution, Metabolism, Excretion
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Bioavailability
Bioavailability
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Metabolism
Metabolism
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Study Notes
- Pharmacology involves pharmacokinetics and pharmacodynamics.
- Pharmacokinetics studies drug movement into, through, and out of the body.
- Pharmacodynamics studies the biochemical and physiological effects of drugs on the body, including the mechanisms of drug action and the relationship between drug concentration and effect.
- Clinical reasoning skills are needed to select, monitor, and individualize drug therapy.
- Selection, monitoring, and individualization of treatment are impacted by various factors relating to pharmacokinetics and pharmacodynamics.
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