Correct Answer: A

Rationale: Correct! When a client is taking furosemide (Lasix), monitoring potassium levels is crucial due to the potential for hypokalemia. Furosemide is a loop diuretic that can lead to potassium loss through increased urine output. Low potassium levels can predispose the client to cardiac dysrhythmias. Sodium, calcium, and magnesium levels are not typically affected by furosemide to the same extent as potassium, making them less critical to monitor in this scenario.

Correct Answer: C

Rationale: The correct answer is to include a diet high in fluids to help minimize the side effects of vincristine. High fluid intake is important in managing potential side effects such as constipation, which is a common issue associated with vincristine therapy. Options A, B, and D are incorrect. A diet low in fat or high in iron is not specifically indicated for managing vincristine side effects. Additionally, a diet low in residue is not directly related to addressing vincristine side effects.

Correct Answer: A

Rationale: The correct time to collect a sputum specimen for culture and sensitivity is in the morning upon rising. This timing ensures the most concentrated sample as sputum produced overnight tends to accumulate and sit in the airways, providing a quality sample for testing. Collecting the specimen immediately after eating breakfast (choice B) may introduce food particles that could contaminate the sample. Collecting it before bed (choice C) may lead to a diluted sample due to daily activities. Collecting the specimen after having a drink of water (choice D) can also result in a diluted sample, impacting the accuracy of the test results.

Correct Answer: A

Rationale: The correct action for the nurse to take when applying a thigh-length sequential compression device to a postoperative client is to ensure that two fingers can fit under the sleeves. This action helps prevent the device from being too tight, which could impede circulation. Choice B is incorrect because the device should not be too tight, as it could lead to circulation issues. Choice C is incorrect as the client should be in a comfortable position, not necessarily supine. Choice D is incorrect as sequential compression devices are typically used continuously to prevent blood clots.

Correct Answer: A

Rationale: The nurse should offer support without pressuring the client. Stating, "I am available to talk if you should change your mind," acknowledges the client's decision while leaving the door open for future discussions. Choice B is incorrect as it assumes the client's decision is final without offering further support. Choice C directs the client back to the provider without addressing the nurse's availability. Choice D commits to a future discussion without considering the client's current preference.