This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET 2019, Subject name: Medicine
[{'content': 'Tolvaptan is used for:- \nSelect and explain. \nA. SIADH, B. Central DI, C. Von Wilebrand disease, D. Catecholamine resistant Shock', 'role': 'user'}, {'content': 'Answer: A \nExplanation: In SIADH, ADH increases so more activation of V2 receptor, so more water absorption. The patients suffer from dilutional hyponatremia. Option B: Managed by Desmopressin / Nasal spray Option C: Managed by Cryoprecipitate / VW Factor Option D: No definitive treatment, patient dies more often', 'role': 'assistant'}]