Correct Answer: B

Rationale: The correct answer is B because performing Valsalva maneuver can lead to a sudden drop in blood pressure, causing the client to lose consciousness. This occurs due to the increased intra-abdominal pressure leading to decreased venous return to the heart. Choices A, C, and D are incorrect as they do not accurately reflect the consequences of Valsalva maneuver. Option A stating that the client's blood pressure will decrease momentarily is incorrect as it actually increases initially. Option C suggesting that the client may suffer from a myocardial infarction is incorrect as Valsalva maneuver does not directly cause heart attacks. Option D implying that the client's blood pressure will increase momentarily is also incorrect as the immediate effect is a rise followed by a significant drop.

Correct Answer: B

Rationale: The correct answer is B: Use barrier techniques. When taking the blood pressure of a client with AIDS, using barrier techniques such as gloves and disposable equipment is crucial to prevent the transmission of the virus through blood or bodily fluids. Wearing a mask and gown (choice A) may not be necessary unless there is a risk of splashes or sprays. Washing hands thoroughly (choice C) is important, but alone may not provide sufficient protection. Choice D is incomplete.

Correct Answer: A

Rationale: The correct answer is A because modifying the care plan during the evaluation phase involves making changes based on the client's response to interventions. By adding a new intervention to address an unmet goal, the nurse demonstrates critical thinking and adaptability in response to the client's needs. This action shows that the nurse is actively assessing and revising the care plan to ensure it is effective in meeting the client's goals. Choice B is incorrect because routine monitoring is part of the assessment and implementation phases, not specifically related to modifying the care plan during evaluation. Choice C is incorrect as administering medication is part of the implementation phase and does not necessarily involve modifying the care plan. Choice D is also incorrect as completing discharge paperwork is typically part of the discharge planning phase, not the evaluation phase where modifications to the care plan are made based on client outcomes.

Correct Answer: C

Rationale: The correct answer is C: Puffiness at the site. This indicates infiltration of the infusion, where the medication or fluid leaks into the surrounding tissue instead of entering the bloodstream. Puffiness is a sign of fluid accumulation due to the infiltration. Redness at the site (A) may indicate infection, pain (B) can be due to various reasons, and exudate (D) may suggest infection or irritation, but they are not specific to infiltration. Infiltration assessment involves checking for swelling, coolness, and blanching around the infusion site.

Correct Answer: A

Rationale: The correct answer is A: Levodopa. Levodopa is the most effective pharmacologic agent for treating Parkinson's disease because it is converted to dopamine in the brain, replenishing the deficient dopamine levels in Parkinson's patients. Selegiline and Symmetrel are also used in treating Parkinson's, but they are typically used as adjunctive therapy rather than the primary treatment. Permax has been withdrawn from the market due to safety concerns, making it an incorrect choice.