This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'All of the following can cause tachycardia except: \nSelect and explain. \nA. Fever, B. Exercise, C. Sympathetic nervous system stimulation, D. Parasympathetic nervous system stimulation', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Option D:\xa0Parasympathetic\xa0nervous system\xa0stimulation of the heart decreases the heart rate as well as the force of contraction, rate of impulse conduction and blood flow through the coronary vessels.\xa0Fever, exercise, and sympathetic stimulation all increase the heart rate.', 'role': 'assistant'}]