Gastrointestinal System

{"ops":[{"insert":"Diagnosis and reasoning"},{"insert":"\n","attributes":{"header":1}},{"insert":"This middle-aged man has presented with chronic diarrhea (i.e. for over 4 weeks in duration). At presentation, he was found to be dehydrated, hypokalemic, and hypocalcemic, with a non-anion gap metabolic acidosis. Subsequently, he was resuscitated and stabilized appropriately.\n \nThe priority is to now identify the cause of the diarrhea, and determine the definitive management. A simple first step is to exclude drugs, over-the-counter medications, and supplements. Here, the history rules out these possibilities.\n \nThe next step should be to determine if the diarrhea is inflammatory, fatty, or watery. This will help focus the diagnostic process.\n\nIn this patient, the stool is abundant, watery and tea-colored; defecation is often nocturnal and"}]}

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