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中文摘要：
心脏的自主神经包括交感神经与副交感神经。支配心脏的交感神经不仅有传出轴突,也有传递心脏感受的传入神经。心肌缺血可激活心交感传入神经并将信息传递到大脑心血管中枢,通过兴奋交感传出神经引起交感兴奋性反射,出现心率加快和血压升高等现象使心肌缺血、缺氧和心绞痛加重。因此,交感神经功能变化可加重心肌缺血损伤。
英文摘要：
The heart autonomic nervous system consists of both sympathetic and parasympathetic nerves.The heart sympathetic nerves contain not only efferent axons, but also the afferent nerve（transmitting messages to the heart）.Myocardial ischemia activates cardiac sympathetic afferent nerve and transmits the information to the brain and cardiovascular centre, which results in sympathetic reflex excitability by excitatory sympathetic efferent. This causes an increase in heart rate and blood pressure, leading to the development of myocardial ischemia, hypoxia and angina pain. Therefore,the change in sympathetic function is a contributing factor to myocardial ischemia.
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