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ATI Pharmacology Made Easy 4.0 ~ Introduction to Pharmacology Questions and Answers | Latest Version | 2025/2026 | Correct & Verified
If a patient develops a rash after starting a new medication, what is this most likely an example of?
a) Drug tolerance
✔✔b) Allergic reaction
c) Drug interaction
d) First-pass metabolism
When is peak drug level typically measured?
a) Before the next dose
b) At the end of therapy
✔✔c) When the drug reaches its highest concentration in the blood
d) After drug excretion
What is the nurse's role in preventing medication errors? 1 / 4
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a) Relying on the pharmacy
b) Asking the patient to double-check
✔✔c) Following the six rights of medication administration
d) Administering all drugs orally
Which term refers to an unexpected, abnormal reaction to a drug that is not a known side effect?
a) Hypersensitivity
✔✔b) Idiosyncratic reaction
c) Toxicity
d) Drug incompatibility
Which term refers to a drug that blocks or dampens a receptor response?
a) Agonist
✔✔b) Antagonist
c) Booster
d) Modulator
Why are elderly patients at higher risk for drug toxicity? 2 / 4
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a) They take fewer medications
b) Their liver function is increased
✔✔c) Their metabolism and excretion processes slow down with age
d) Their blood volume increases
What does the term “loading dose” refer to in pharmacology?✔✔a) A higher initial dose of a drug given to quickly achieve therapeutic levels
b) A dose taken before meals
c) A dose given after side effects occur
d) A placebo used in studies
Which route of administration offers the slowest absorption rate?✔✔a) Oral
b) Intravenous
c) Inhaled
d) Sublingual
Which lab result is most important to monitor when giving a patient nephrotoxic medications? 3 / 4
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✔✔a) Creatinine
b) Hemoglobin
c) Platelet count
d) White blood cell count
Which of the following is a common reason a patient might not adhere to their medication regimen?✔✔a) Side effects
b) Clear instructions
c) Affordable cost
d) Family support
Which of the following best defines the term "half-life" of a drug?
a) The time it takes for the drug to start working
✔✔b) The time it takes for the concentration of the drug in the body to decrease by 50%
c) The time between doses
d) The duration of a drug’s therapeutic effect
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