This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Anaesthesia
[{'content': 'The definite contraindication of Thiopentone \nSelect and explain. \nA. Diabetic patient, B. ECT, C. Sarcoidosis, D. Acute intermittant porphyria', 'role': 'user'}, {'content': 'Answer: D \nExplanation: (D) Acute intermittant porphyria # Barbiturates are Contraindicated in -- H/O Barbiturate hypersensitivity H/O Acute intermittent porphyria (cause LMN paralysis or CVS collapse);Anticipated airway obstruction> Care: Fixed cardiac output states; Shock states; Hepatic/Renal dysfunction; Asthmatic/Myxoedema; Adrenocortical failure; Myotonia dystrophia; Extremes of age.', 'role': 'assistant'}]