Drug used in ameliorative test for myasthenia gravis is:
Physostigmine
Edrophonium
Tacrine
Pyridostigmine
Ans. (B) Edrophonium(Ref: KDT 8th/e p121)Drug used in ameliorative test (tensilon test) for myasthenia gravis is edrophonium. It is a cholinergic drug and can be used for diagnosis of myasthenia gravis because of its short duration of action (10 - 30 min.)
A.N.S.