Correct Answer: A

Rationale: In heart failure, the accumulation of fluid can lead to peripheral edema, which is swelling in the extremities. This is a common sign that healthcare professionals should monitor for. While tachycardia (increased heart rate), bradycardia (decreased heart rate), and hypotension (low blood pressure) can also occur in heart failure, they are not the primary signs typically associated with this condition. Therefore, peripheral edema is the most relevant sign to monitor in this case.

Correct Answer: A

Rationale: The correct answer is to pinch the skin and inject at a 45-degree angle when administering enoxaparin. This technique helps ensure proper administration of the medication. Massaging the injection site after administering is unnecessary and could increase the risk of bleeding. Administering at a 90-degree angle is not recommended for enoxaparin injections. Rotating injection sites is important to prevent tissue damage and irritation.

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: 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: D

Rationale: The correct answer is D: Airborne. Tuberculosis is spread through small droplets that remain airborne for longer periods, hence requiring airborne precautions. Choice A - Contact precautions are used for diseases spread by direct or indirect contact. Choice B - Droplet precautions are for diseases transmitted by large respiratory droplets that can travel short distances. Choice C - Protective isolation is not necessary for tuberculosis, as it is not spread through contact with the client.