A nurse is caring for a patient with chronic heart failure (CHF) who is experiencing shortness of breath. What is the priority nursing intervention?

Correct Answer: A

Rationale: The correct answer is A: Administer oxygen therapy. In CHF, shortness of breath is often due to inadequate oxygenation. Administering oxygen therapy helps improve oxygen levels, alleviating respiratory distress. Morphine (B) can depress respiratory drive, making the situation worse. Administering pain relief (C) is not the priority when the patient's breathing is compromised. Administering IV fluids (D) can worsen fluid overload in CHF, exacerbating symptoms. Overall, oxygen therapy directly addresses the patient's immediate need for improved oxygenation in CHF.

Correct Answer: D

Rationale: Bilateral basilar crackles suggest pulmonary edema or infection, requiring urgent action in an older patient.

Correct Answer: B

Rationale: Suctioning is within the LPN/LVN scope when directed, unlike assessment or teaching.

Correct Answer: A

Rationale: Smoking cessation is the most effective way to prevent further lung damage and reduce cancer risk in a long-term smoker.

Correct Answer: C

Rationale: Epoprostenol disconnection is life-threatening in IPAH due to rapid rebound pulmonary hypertension; it requires immediate reconnection.