This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Anesthesia, Subject name: Anaesthesia
[{'content': 'Inhalational agent with lowest blood gas coefficient is: \nSelect and explain. \nA. Isoflurane, B. NO, C. Xenon, D. Enflurane', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans: (c) XenonRef. Stoelting\'s Pharmacology and Physiology in Anesthetic Practice, 4th edition 4.Blood gas partition coefficient (BG coefficient): It is ratio of solubility of a gas (inhalational agent) in blood and in the air (alveolar air)"Low the BG coefficient = Lesser the solubility of gas in blood = Rapid onset of action"BG coefficient can be affected by:Serum lipid contentSerum protein contentHematocritAgeInhalational agentsBG coeficientVapour pressure (mm Hg)Boiling point (degree Celsius)Xenon0.115--Desflurane0.4267323.5Nitrous oxide0.465200-88Sevoflurane0.6916258.5Isoflurane1.4623848.5Enflurane1.9017456.5Halothane2.5424350Chloroform816060Trilene96087Ether1242536Methoxyflurane1323103', 'role': 'assistant'}]