A client has been prescribed phenytoin. Which of the following should the nurse monitor to prevent toxicity?

Correct Answer: C

Rationale: Corrected Rationale: Serum phenytoin levels should be regularly monitored to prevent toxicity because the therapeutic range is narrow. Monitoring blood pressure (choice A), complete blood count (choice B), and liver function tests (choice D) are not directly related to preventing phenytoin toxicity.

Correct Answer: A

Rationale: Corrected Rationale: Clopidogrel is an antiplatelet medication, so the nurse should monitor for signs of bleeding and liver function tests due to potential liver effects. Monitoring liver function tests is essential to detect any adverse effects on the liver because clopidogrel can cause hepatotoxicity. While monitoring blood pressure, potassium levels, and respiratory rate are important in general patient care, they are not the priority assessments specifically related to clopidogrel use.

Correct Answer: A

Rationale: The correct answer is A: Avoid potassium-rich foods. Spironolactone can lead to hyperkalemia, a condition characterized by high levels of potassium in the blood. To prevent this complication, clients taking spironolactone should avoid potassium-rich foods. Choice B is incorrect because spironolactone can be taken with or without food. Choice C is not directly related to spironolactone use, as toxicity monitoring is not a specific concern with this medication. Choice D is incorrect because discontinuing the medication solely based on elevated potassium levels may not be necessary; instead, dosage adjustments or potassium restriction are often more appropriate.

Correct Answer: A

Rationale: The correct answer is A: Blood pressure. Sildenafil, a medication for erectile dysfunction, can cause changes in blood pressure. The nurse should monitor for hypotension as a potential side effect. Monitoring heart rate (choice B) is not a priority when administering sildenafil unless there are pre-existing heart conditions. Temperature (choice C) and respiratory rate (choice D) are typically not directly affected by sildenafil administration, making them less relevant for monitoring in this case.

Correct Answer: C

Rationale: The correct answer is C. Omeprazole is a proton pump inhibitor that can mask symptoms of gastrointestinal bleeding; clients should be monitored for this. Choices A and B are incorrect because omeprazole is usually taken before meals, and while it is important to avoid NSAIDs if possible due to their effects on the stomach, it is not directly related to omeprazole use. Choice D is also incorrect as omeprazole is not typically associated with causing drowsiness.