Correct Answer: C

Rationale: The correct answer is C. A CD4 count less than 200 cells/mm³ is a diagnostic criterion for AIDS. Choices A, B, and D are incorrect. Choice A is vague and does not reflect the diagnostic criteria for AIDS. Choice B is not accurate, as the presence of opportunistic infections, not their absence, is indicative of AIDS. Choice D is unrelated to the diagnosis of AIDS in adults.

Correct Answer: D

Rationale: The correct answer is D: Elevated creatinine phosphokinase (CPK). Elevated CPK levels indicate muscle damage, including damage to the cardiac muscle, which aligns with the diagnosis of myocardial infarction. Choice A, low serum albumin, is not directly related to myocardial infarction. Choice B, high serum cholesterol, is more associated with conditions like atherosclerosis rather than acute myocardial infarction. Choice C, abnormally low white blood cell count, is typically not a lab value associated with myocardial infarction; instead, it could suggest other conditions like infections or bone marrow issues.

Correct Answer: D

Rationale: Corrected Rationale: Ascites, the accumulation of fluid in the abdominal cavity, is a common complication of cirrhosis. Diuretics are the primary intervention to manage ascites by promoting the excretion of excess fluid from the body, thus reducing abdominal swelling. Restricting fluid intake (Choice A) would not be appropriate as it may lead to dehydration. Increasing sodium intake (Choice B) is contraindicated as it can worsen fluid retention. Encouraging a high-protein diet (Choice C) is not directly related to managing ascites.

Correct Answer: B

Rationale: The correct answer is to inspect the nares and ears for skin breakdown. This is important because the nasal cannula can cause skin breakdown due to prolonged use and friction. Ensuring that the skin is intact helps prevent complications. Choice A is incorrect as oxygen therapy via a nasal cannula does not involve mist. Choice C is incorrect as lubricating the tips of the cannula is not a standard practice and may lead to complications. Choice D is incorrect because while cleanliness is important, maintaining sterile technique is not necessary for handling a nasal cannula in this context.

Correct Answer: C

Rationale: The correct answer is C: 'health threat.' The new pregnancy poses a health threat due to the potential strain on resources and the existing issues with the children, such as underweight and being pale. Choice A is incorrect as it does not fully capture the potential risks associated with the new pregnancy. Choice B is also incorrect as it includes 'health deficit,' which is not explicitly mentioned in the scenario. Choice D, 'foreseeable crisis,' is not the most fitting description of the situation presented.