<prompt> Tolvaptan is used for:-SIADHCentral DIVon Wilebrand diseaseCatecholamine resistant Shock  <response>: 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 