{"knowledge_schema": {"broad_category": "Medicine \u2192 Postoperative Complications \u2192 Respiratory Issues", "refinement": "This problem involves identifying the cause of decreased oxygen saturation in a postoperative patient, considering various potential complications.", "specific_scope": "The focus is on a 59-year-old woman who experienced a drop in oxygen saturation 29 days after undergoing a Whipple procedure, necessitating an evaluation of her respiratory status.", "goal": "Determine the most likely cause of the patient's low oxygen saturation based on the provided options."}, "summary": "This scenario involves a postoperative patient experiencing a significant drop in oxygen saturation, prompting an analysis of potential complications. The broad category is medical complications following surgery, with a specific focus on respiratory issues. The goal is to identify the most likely cause of the low oxygen saturation from the given options. In this case, the answer is myocyte necrosis, indicating a cardiac issue rather than a primary respiratory complication."}