Extract:

Question 1 of 5

What is critical concentration in relation to medication therapeutic effects?

A. The concentration of a medication in the blood that is necessary for the medication to be absorbed into the body.B. The minimum concentration of a medication in the blood needed to achieve the desired therapeutic effectC. The maximum concentration of a medication in the blood that can be safely tolerated without adverse effects.D. The concentration of a medication in the blood that is considered optimal for achieving the desired therapeutic effect.

Correct Answer: B

Rationale: Critical concentration is the minimum blood level required for a drug to produce its therapeutic effect, ensuring efficacy without toxicity.

Question 2 of 5

Resistance to anti-infectives refers to:

A. The ability of healthcare providers to accurately diagnose and prescribe the appropriate anti-infective drugs.B. The ability of the body's immune system to fight off infections without the need for drugs.C. The ability of drugs to effectively kill microorganisms and eliminate infections.D. The ability of microorganisms to survive and multiply in the presence of drugs that are designed to inhibit their growth or kill them

Correct Answer: D

Rationale: Resistance occurs when microorganisms survive anti-infective drugs, reducing treatment efficacy and complicating infection management.

Question 3 of 5

Which of the following best describes pharmacokinetics?

A. The study of how drugs interact with specific drugB. The study of how drugs are developed and manufacturedC. The study of how drugs are prescribed and administeredD. The study of how drugs are absorbed, distributed, metabolized, and excreted by the body.

Correct Answer: D

Rationale: Pharmacokinetics studies the processes of drug absorption, distribution, metabolism, and excretion, determining how the body handles a drug.

Question 4 of 5

Which of the following anti-infectives is a fluoroquinolone?

A. CiprofloxacinB. CephalexinC. PenicillinD. Azithromycin

Correct Answer: A

Rationale: Ciprofloxacin is a fluoroquinolone, effective against a broad spectrum of bacteria, unlike cephalosporins, penicillins, or macrolides.

Question 5 of 5

What is the definition of pharmacodynamics?

A. The study of how drugs are formulated into different dosage forms.B. The study of how drugs are absorbed, distributed, metabolized, and eliminated in the body.C. The study of how drugs interact with specific drug receptors to produce a physiological response.D. The study of how drugs are developed and tested for safety and efficacy

Correct Answer: C

Rationale: Pharmacodynamics examines how drugs interact with receptors to produce effects, explaining the mechanism behind a drug's physiological response.

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ATI Nurs 240 Pharmacology quiz Questions

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