ATI Pharmacology Final Exam 1 | Nurselytic

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ATI Pharmacology Final Exam 1 Questions

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Question 1 of 5

Phenytoin has a narrow therapeutic index. The nurse recognizes that this characteristic indicates which of these?

Correct Answer: D

Rationale: The correct answer is D: The safe and the toxic plasma levels of the drug are very close to each other. Phenytoin's narrow therapeutic index means that the difference between the plasma levels that are effective and those that are toxic is minimal. This indicates that dosing must be carefully monitored to avoid toxicity while still achieving therapeutic effect.
Choice A is incorrect as a narrow therapeutic index does not necessarily mean low effectiveness.
Choice B is incorrect as there is a clear distinction between safe and toxic levels.
Choice C is incorrect as a very small dosage may not be sufficient for the therapeutic effect.

Question 2 of 5

Correct Answer:

Rationale:

Question 3 of 5

Correct Answer:

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Question 4 of 5

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Question 5 of 5

Correct Answer:

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