Correct Answer: A

Rationale: The correct answer is to administer nitroglycerin as prescribed. Nitroglycerin helps relieve chest pain by dilating blood vessels and improving blood flow, addressing the immediate concern of chest pain. Encouraging deep breaths may not be appropriate for chest pain, monitoring blood pressure, although important, is not the priority when the patient is experiencing chest pain, and while resting in a comfortable position is beneficial, administering nitroglycerin is the priority intervention to address the chest pain.

Correct Answer: B

Rationale: When a health care provider orders a medication with a dosage significantly higher than usual, the nurse's initial action should be to question the provider and verify the dose. This is crucial to ensure patient safety and prevent medication errors. Administering the medication as ordered (Choice A) without clarification could potentially harm the patient if there was an error in the prescription. Administering half the dosage as a precaution (Choice C) is not a safe practice as it deviates from the prescribed order. Refusing to administer the medication without clarification (Choice D) is important, but the first step should be to seek clarification from the provider to prevent any unnecessary delays in patient care.

Correct Answer: D

Rationale: The correct answer is to monitor the patient's protein intake closely. In patients with chronic kidney disease on a low-protein diet, monitoring protein intake is crucial to prevent complications such as malnutrition or inadequate nutrient intake. Encouraging small, frequent meals (Choice A) can be beneficial but is not the priority over monitoring protein intake. Monitoring intake and output (Choice B) is important but does not directly address the specific focus on protein intake. Educating the patient on the benefits of a low-protein diet (Choice C) is essential but not as immediate as monitoring the actual protein intake.

Correct Answer: B

Rationale: The correct way to manage contaminated dressings is to place them in plastic bags for proper disposal. This helps prevent the spread of infection. Choice A is incorrect because saving part of the dressing is not a recommended practice. Choice C is not directly related to managing contaminated dressings. Choice D is incorrect as wrapping the used dressing in toilet tissue is not the appropriate way to dispose of contaminated dressings.

Correct Answer: B

Rationale: The correct answer is B: "Ensure the chest tube is connected to a closed drainage system." This is a critical nursing action when managing a patient with a chest tube because it is essential for proper drainage and to prevent complications such as air leaks or infections. Option A is incorrect because keeping the chest tube clamped at all times would prevent proper drainage and could lead to complications. Option C is incorrect as emptying the chest tube drainage system should be done based on assessment findings rather than a fixed time interval. Option D is incorrect because disconnecting the chest tube when the patient is ambulating can lead to complications like a pneumothorax.