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心绞痛是由于冠状动脉粥样硬化使心肌血管变窄、血流量减少。此外,如果劳累、运动、情绪激动、紧张、用力排便等加重心脏负担的情况,也有可能诱发心绞痛。心绞痛发作时,病人会突然感到胸骨后部出现持续的压榨性或窒息性剧痛。病人首先要立即停止一切
Angina pectoris is due to coronary atherosclerosis myocardial blood vessels narrowed, blood flow decreased. In addition, angina may also be induced if exertion, exercise, emotional agitation, nervousness, forced defecation and the like increase the burden on the heart. When angina pectoris occurs, the patient suddenly feels a persistent crushing or suffocation of the sternum. The patient must stop everything immediately