Correct Answer: A

Rationale: The correct answer is A because pursed lip breathing helps to slow down and control the exhalation process, allowing the individual to exhale a smaller volume of air with more force. This helps to prevent air trapping in the lungs, improve oxygen exchange, and reduce shortness of breath. B: Incorrect - Pursed lip breathing does not increase expiration but rather controls it. C: Incorrect - While pursed lip breathing can promote deep breathing and better oxygen exchange, its primary purpose is to regulate exhalation volume. D: Incorrect - Pursed lip breathing does not specifically target the upper thorax but rather facilitates a more efficient breathing pattern by reducing air trapping in the lungs.

Correct Answer: B

Rationale: The correct answer is B: Creamy white patches. These patches are indicative of oral thrush, a common fungal infection seen in individuals with weakened immune systems like those with AIDS. This infection is caused by Candida albicans. It presents as white patches on the tongue, inner cheeks, or roof of the mouth. Halitosis (A) is bad breath, not specific to AIDS. Carious teeth (C) refers to cavities, not directly related to AIDS. Swollen lips (D) can be a symptom of various oral conditions, but not specific to AIDS. In summary, creamy white patches are a characteristic oral problem associated with AIDS due to opportunistic infections like oral thrush.

Correct Answer: C

Rationale: The correct answer is C: Apply a cream or lotion to the area. This is because radio-dermatitis is a common side effect of radiation therapy, causing skin irritation and dryness. Applying a cream or lotion helps to moisturize the skin, reduce inflammation, and promote healing. Washing the area with soap can further irritate the skin. Leaving the skin alone may prolong discomfort and delay healing. Avoiding creams or lotions can worsen dryness and discomfort. Overall, applying a suitable cream or lotion is the most effective method to alleviate symptoms and support skin recovery in radio-dermatitis.

Correct Answer: A

Rationale: The correct answer is A because pursed lip breathing helps to slow down and control the exhalation process, allowing the individual to exhale a smaller volume of air with more force. This helps to prevent air trapping in the lungs, improve oxygen exchange, and reduce shortness of breath. B: Incorrect - Pursed lip breathing does not increase expiration but rather controls it. C: Incorrect - While pursed lip breathing can promote deep breathing and better oxygen exchange, its primary purpose is to regulate exhalation volume. D: Incorrect - Pursed lip breathing does not specifically target the upper thorax but rather facilitates a more efficient breathing pattern by reducing air trapping in the lungs.

Correct Answer: D

Rationale: The correct answer is D because using two pillows to raise the head can increase the risk of venous stasis and thrombosis in a client with polycythemia vera. This condition involves an increased production of red blood cells, leading to thicker blood and potential clot formation. Elevating the head too much can impede blood flow, exacerbating the risk of clotting. Choices A, B, and C are all appropriate statements indicating good self-care practices and physical activity, which are beneficial for clients with polycythemia vera to improve circulation and overall health.