Thiopentone in contraindicated in all except -
Thiopentone is an barbiturate and being barbiturate it is enzyme inducers thus can precipitate porphyria But depending on enzyme affected it has been found to be safe in Porphyria cuneata tarda and absolutely contraindicated in Acute intermittent Porphyria. fuher being cardiovascular unstable it is contraindicated in shock. it is bronchoconstrictor so contraindicated in asthmatic patients .
Porphyria cuneata tarda
Staticus asthamaticus
Shock
Acute intermittent porphyria
Intravenous Anesthetic Agents