Correct Answer: A

Rationale: The correct answer is A: Administer sublingual nitroglycerin. Sublingual nitroglycerin is the first-line treatment for chest pain related to coronary artery disease. It helps dilate the coronary arteries and improve blood flow to the heart, providing immediate relief from ischemia. Administering nitroglycerin promptly can help alleviate the chest pain and prevent further complications. Obtaining a 12-lead electrocardiogram (Choice B) is important but should not delay the administration of nitroglycerin. Calling the healthcare provider (Choice C) can be done after initiating immediate treatment. Checking the client's oxygen saturation (Choice D) is relevant but not the first action to take in this scenario.

Correct Answer: B

Rationale: The correct answer is B: Medicare. Medicare is the federal health insurance program for individuals aged 65 and older, so it is the most suitable option for the 66-year-old woman retiring. Medicaid (choice A) is a state and federally funded program for low-income individuals and families, not specifically for retirees. COBRA (choice C) allows employees to continue their employer-sponsored health insurance for a limited time after leaving employment. Private insurance (choice D) refers to health insurance plans purchased directly from private insurance companies.

Correct Answer: A

Rationale: Correct Answer: Monitoring respiratory status and oxygenation is crucial in clients with lung cancer, as metastasis to the lungs or pleural effusion can compromise breathing. This assessment helps in early identification of respiratory distress and the need for interventions to maintain adequate oxygenation. Choice B is important but not the priority in this situation. Evaluating mental status and cognition should follow after ensuring the client's physiological needs are met. Choice C, checking pain level and providing comfort, is essential but secondary to assessing respiratory status. Choice D, assessing nutritional status and appetite, is also important but not the priority when the client's breathing is at risk.

Correct Answer: D

Rationale: Sluggish and unequal pupillary responses are indicative of increased intracranial pressure (ICP) in a child with bacterial meningitis and hydrocephalus. This finding suggests that the optic nerve is being compressed due to increased ICP, causing a delay in pupillary reactions. Such a delay is a critical sign of worsening ICP and necessitates immediate intervention. Low blood pressure and increased respiratory rate can occur in various conditions but are less specific to increased ICP than sluggish and unequal pupillary responses, which directly reflect neurological compromise.

Correct Answer: D

Rationale: The correct answer is D. Clients taking warfarin should avoid alcohol and over-the-counter medications without consulting their healthcare provider, as these can interact with warfarin and increase the risk of bleeding. Aspirin, in particular, can exacerbate this risk. Choice A is incorrect because taking warfarin with aspirin can increase the risk of bleeding. Choice B is incorrect as while green leafy vegetables contain vitamin K which can interact with warfarin, it is more important to maintain a consistent intake rather than increase it. Choice C is incorrect because foods high in potassium do not directly impact the bleeding risk associated with warfarin.