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当情绪激动时,通过神经—体液(内分泌)的机制,使体内肾上腺素的分泌增多。肾上腺素虽然可使心脏的冠状动脉扩张,但还能促使下列几种情况发生: (1)显著的心动过速。(2)血压增高。(3)心肌对氧的需要量增多。这三者总的结果,就使心脏的负荷增加,发生相对性缺血,对冠状动脉粥样硬化患者可诱发心绞痛。
When emotional, through the neural - body fluid (endocrine) mechanism, the body increased secretion of epinephrine. Although epinephrine can make the heart of the coronary artery dilation, but also to promote the following situations: (1) significant tachycardia. (2) high blood pressure. (3) myocardial oxygen demand increased. The overall result of these three is to increase the load on the heart and to cause relative ischemia, which can induce angina in patients with coronary atherosclerosis.