This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Hickey-Hare test is used to diagnose - \nSelect and explain. \nA. Congenital pyloric stenosis, B. Duodenal atresia, C. Achlasia cardia, D. Diabetes insipidus', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Diabetes insipidus Hypeonic saline infusion test that induces plasma hyperosmolality. Used for distinguishing between different causes of polyuria and polydipsia.", 'role': 'assistant'}]