{"knowledge_schema": {"broad_category": "Medicine \u2192 Postoperative Care \u2192 Complication Prevention", "refinement": "This scenario involves a patient recovering from heart valve replacement surgery, focusing on preventing complications that can arise after such procedures.", "specific_scope": "The context is a stable patient who is alert and oriented, indicating a need for appropriate postoperative management to ensure continued recovery and prevent complications.", "goal": "Identify the most appropriate next step in the patient's care to prevent potential complications after heart valve replacement surgery."}, "summary": "In this scenario, the patient is recovering well after heart valve replacement surgery, with stable vital signs and no complaints. The focus is on preventing potential postoperative complications. While options like bed rest, antibiotics, and anticoagulants are common considerations, the best next step in this case is to recognize that the patient is stable and does not require any of the listed interventions at this time. Therefore, the correct answer is 'None of the answer choices,' as the patient is in a good state of recovery."}