This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
[{'content': 'Septicaemic shock with multi-organ failure is treated by \nSelect and explain. \nA. Adrenaline, B. Ephedrine, C. Phenylephrine, D. Norepinephrine', 'role': 'user'}, {'content': "Answer: D \nExplanation: Norepinephrine in septic shock:First line agent in septic shockPredominant alpha receptor agonist effects and results in potent peripheral aerial vasoconstriction without significantly increasing hea rate or cardiac outputDosage range is 5-20 microgram/min(Ref: Harrison's 18/e p2223, 2228)", 'role': 'assistant'}]