Rationale
Correct answer: A. Assess airway, breathing, circulation, and oxygenation; apply oxygen and notify the provider immediately.
Rationale: Sudden dyspnea and chest pain after surgery raise concern for pulmonary embolism or cardiac event; immediate ABC assessment and escalation are required.
Hint: Apply ABCs, client stability, and NCSBN clinical judgment steps before choosing an intervention.
Level: Advanced
Difficulty: Hard
Subtopic: Perioperative nursing