<prompt> Shanti has been diagnosed to have brain tumor. You would prefer to give her betamethasone dexamethasone over hydrocoisone as steroids to decrease her cerebral edema because:They do not cause Na and water retentionThey are more potentThey can be administered intravenouslyThey inhibit brain tumours  <response>: Triamcinolone, Betamethasone, Dexamethasone and Paramethasone are selective glucocoicoids have zero mineralocoicoid action. These are preferred for cerebral edema because they lack salt and water retaining potential mineralocoicoid action. 