Correct Answer: B

Rationale: The correct answer is B: Pneumonia Carnii. Pulmonary complications in AIDS patients are commonly caused by Pneumocystis jirovecii (previously known as Pneumocystis carinii) pneumonia. This opportunistic infection targets the lungs of immunocompromised individuals, leading to severe respiratory issues. Kaposi's Sarcoma (A) is a cancer commonly seen in AIDS patients but does not directly cause pulmonary complications. Filterable Virus (C) is a vague term and not a known cause of pulmonary issues in AIDS patients. Staphylococcus bacteria (D) can cause infections in AIDS patients but is less common than Pneumocystis jirovecii pneumonia in causing pulmonary complications.

Correct Answer: C

Rationale: The correct answer is C: Vitamin D. In hypoparathyroidism, there is a deficiency of parathyroid hormone leading to low calcium levels. Vitamin D helps in the absorption of calcium from the intestines, thus aiding in maintaining normal calcium levels. It is often prescribed along with calcium supplements to support bone health and prevent complications. Folic acid (A) is not directly related to the treatment of hypoparathyroidism. Potassium (B) is not typically prescribed for this condition and can be harmful in high levels. Iron (D) is not directly involved in calcium metabolism and is not part of the standard treatment regimen for hypoparathyroidism.

Correct Answer: C

Rationale: The correct answer is C: providing for frequent rest periods. This intervention is essential for a client with radiation-induced thrombocytopenia to prevent further platelet depletion and reduce the risk of bleeding episodes. Rest periods help conserve energy and minimize physical exertion, which can trigger bleeding in thrombocytopenic clients. Rationale: 1. Administering aspirin (choice A) is contraindicated in thrombocytopenia as it can further decrease platelet count and increase the risk of bleeding. 2. Inspecting the skin for petechiae (choice B) is important but not as crucial as providing rest periods in managing thrombocytopenia. 3. Placing the client in strict isolation (choice D) is not necessary for radiation-induced thrombocytopenia unless there are other specific infectious concerns. In summary, providing frequent rest periods is the most appropriate intervention to manage radiation-induced thrombocytopenia, promoting patient

Correct Answer: C

Rationale: The correct answer is C: Memory cells. After recovery from a disease, memory cells are formed as part of the adaptive immune response. These memory cells "remember" the pathogen and can mount a quicker and stronger immune response upon re-exposure. This results in immunity to the disease. Antigens (choice A) are substances that trigger the immune response but do not provide immunity on their own. Complement (choice B) is a group of proteins that enhance the immune response but do not directly lead to immunity. Natural killer cells (choice D) are part of the innate immune system and are not responsible for the specific memory response needed for immunity.

Correct Answer: C

Rationale: The correct answer is C: Surgical removal. Surgical removal of the cancerous tumor is the best treatment before metastasis because it physically removes the cancer cells. Chemotherapy and radiation are used to treat cancer after it has spread, not as the primary treatment. Choice D is incorrect because not all types of cancer can be effectively treated with all three options.