You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is A 19-year-old girl develops sudden-onset non-bloody diarrhea. She was previously well and is not taking any medications or traveled anywhere recently. Her abdomen is soft and nontender on examination, and the anion gap is normal.For the above patient with new symptoms, select the most likely acid base disorder. and explain in detail?
She has a non-anion gap metabolic acidosis because of bicarbonate loss from the diarrhea. The anion gap is calculated as the sodium concentration minus the chloride plus the bicarbonate concentration. Other causes of bicarbonate loss with normal anion gap include proximal RTA and primary hyperparathyroidism.