Correct Answer: A

Rationale: The correct answer is A. The nurse should report these vital signs to the provider immediately as they indicate increased temperature, tachycardia, and tachypnea, which are signs of possible infection or systemic inflammatory response. This could exacerbate the client's unstable angina and needs prompt evaluation. Choices B, C, and D are not as urgent as the vital signs in option A and do not directly indicate a worsening condition in the context of unstable angina.

Correct Answer: A

Rationale: A distended, board-like abdomen is a concerning sign indicating the possibility of a ruptured appendix and peritonitis, which are medical emergencies. Reporting this finding immediately is crucial for prompt intervention. Choice B, an elevated WBC count, could indicate infection but is not as urgent as the risk of a ruptured appendix. Choice C, rebound tenderness over McBurney's point, is a classic sign of appendicitis but does not indicate an immediate threat like a possible rupture. Choice D, a slightly elevated temperature, is a nonspecific finding and not as critical as the risk of peritonitis associated with a distended, board-like abdomen.

Correct Answer: B

Rationale: The correct answer is B: 'Consume high-calorie, high-protein foods.' Clients with COPD often have increased energy needs due to the work of breathing. Consuming high-calorie, high-protein foods can help provide the necessary energy and prevent weight loss. Choice A is incorrect because eating three large meals daily may lead to increased shortness of breath due to a full stomach. Choice C is incorrect because limiting caffeinated drinks is important, but the recommendation should focus on reducing intake, not specifying a number. Choice D is incorrect because drinking fluids during mealtime can lead to early satiety, making it difficult for the client to consume enough calories.

Correct Answer: B

Rationale: When using the ABC approach to client care, the nurse should identify that the priority intervention is administering oxygen. In this scenario, the client's oxygen saturation is only 91%, which is below the normal range of 95% and above. Oxygen is essential for adequate tissue perfusion and oxygenation of vital organs. Administering oxygen takes precedence over other interventions to ensure the client's physiological needs are met first. Choice A can be addressed after ensuring adequate oxygenation. Choice C is important for preventing postoperative complications but is not as urgent as addressing oxygen saturation. Choice D is a common postoperative intervention, but in this case, ensuring adequate oxygenation is the priority over IV fluid administration.

Correct Answer: A

Rationale: The correct instruction the nurse should provide is that the medication can cause the client's urine to turn a dark color, which is a harmless effect of carbidopa/levodopa. This is due to the metabolites of levodopa. Immediate relief is not expected after taking the medication because it may take weeks to months to achieve the full therapeutic effect. Taking the medication with a high-protein food is not recommended as protein can interfere with the absorption of levodopa. Skipping a dose of the medication if the client experiences dizziness is incorrect as dizziness may be a side effect of the medication, and doses should not be skipped without consulting a healthcare provider.