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: D

Rationale: When a nurse observes crepitus around a chest tube site, it could indicate subcutaneous emphysema, a potentially serious condition where air gets trapped under the skin. Measuring the area of swelling and crackling is important as it helps monitor the progression of subcutaneous emphysema. Applying a pressure dressing (choice A) might not address the underlying cause and could potentially worsen the condition. Administering an oral antihistamine (choice B) is not indicated for crepitus at a chest tube site. Assessing for allergies to topical cleaning agents (choice C) is important but not the immediate priority when crepitus is observed.

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: In this scenario, the patient's periorbital bruising and bloody drainage from both ears suggest a severe head injury. Projectile vomiting is a red flag symptom that may indicate increased intracranial pressure, which requires immediate attention to prevent further neurological deterioration. Rebound abdominal tenderness (choice A) typically indicates peritonitis and is not directly related to the primary head injury. Diminished breath sounds bilaterally (choice B) suggest a pneumothorax or hemothorax, which are important but not as immediately life-threatening in this context. Rib pain with deep inspiration (choice C) is concerning for rib fractures or pulmonary contusion, which are also important but do not take precedence over addressing the potential increased intracranial pressure.

Correct Answer: D

Rationale: The most appropriate question by the charge nurse would be to ask the UAP if they have reviewed the list of expected skills needed on the pediatric unit. This ensures that the UAP is aware of the specific skills required for safe and appropriate care in that particular unit. Choices A, B, and C do not directly address the need for the UAP to review the expected skills, which is crucial for delegation decisions during floating assignments.