This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Complications of anaesthesia, Subject name: Anaesthesia
Drug of choice in cardiogenic shock is 
Select and explain. 
A. Dopamine, B. Phenylalanine, C. Noradrenaline, D. Adrenaline
A: Dopamine
Answer: A: Dopamine 
Explanation: Dopamine or dobutamine are positive inotropic drugs with the prompt onset and sho duration of action; they are most useful in patients with failure complicated by severe hypotension.Katzung 13e pg: 220