Correct Answer: C

Rationale: The correct answer is C, 'Living will.' A living will is a legal document that outlines an individual's preferences for life-sustaining medical treatment if they become unable to make decisions. Choice A, 'Do Not Resuscitate,' specifically refers to a directive that instructs healthcare providers not to perform CPR. Choice B, 'Informed consent,' pertains to a patient's right to be informed about and consent to medical treatment. Choice D, 'Durable power of attorney for health care,' involves appointing someone to make healthcare decisions on behalf of an individual when they are unable to do so.

Correct Answer: B

Rationale: The correct answer is B. Reducing fluid intake before bedtime helps prevent interruptions in sleep due to bathroom visits, which is crucial for individuals with insomnia. Taking naps throughout the day (choice A) may disrupt nighttime sleep. Drinking coffee (choice C) is counterproductive as it contains caffeine, which can interfere with falling asleep. Increasing screen time before bed (choice D) can negatively impact sleep quality due to the stimulating effects of screens.

Correct Answer: A

Rationale: The correct answer is A: 90-degree angle. The ventrogluteal site is preferred for intramuscular injections because it is away from major nerves and blood vessels. Administering the injection at a 90-degree angle ensures that the medication reaches deep into the muscle tissue, allowing for proper absorption of the drug. Choice B, 60-degree angle, is incorrect as it is not the recommended angle for the ventrogluteal site. Choice C, 75-degree angle, and Choice D, 45-degree angle, are also incorrect as they are not the appropriate angles for administering an intramuscular injection using the ventrogluteal site.

Correct Answer: B

Rationale: The correct answer is B: Peripheral edema. In heart failure, the heart's inability to pump effectively can lead to fluid backup, causing swelling in the extremities, known as peripheral edema. Monitoring for peripheral edema is crucial as it is a common sign of worsening heart failure. Choices A, C, and D are incorrect because increased energy, elevated heart rate, and improved lung sounds are not typical findings in heart failure. Increased energy is not usually associated with heart failure, an elevated heart rate may occur as a compensatory mechanism but is not a direct sign of heart failure, and improved lung sounds are not expected in heart failure which often presents with crackles or wheezes due to pulmonary congestion.

Correct Answer: C

Rationale: The healthcare professional should verify the client's vaccination history to ensure they are due for the flu vaccine. Verifying the client's age (choice A) is important for other vaccines but not specifically for the flu vaccine. While allergy to eggs (choice B) is relevant as the flu vaccine is traditionally produced in eggs, it is not the top priority for verification. The client's weight (choice D) is not directly related to the administration of the flu vaccine.