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通常认为不稳定型心绞痛是新近发生的,永久性的冠脉阻塞伴侧枝循环血流不足,1976年neill提出不稳定型心绞痛是间隙性的,可逆的冠脉阻塞的理论,Folt等动物实验证实这一理论。不稳定型心绞痛患者,冠脉血流量下降的机制是由于冠状动脉在固定的、不完全阻塞部位有血小板的聚集,血管内皮的破坏或痉挛造成的血小板。
Unstable angina pectoris is generally considered to be new, permanent coronary occlusion with collateral circulation flow insufficiency, 1976 Neill proposed unstable angina pectoris is intermittent, reversible coronary occlusion theory, Folt and other animal experiments confirmed This theory. In patients with unstable angina, the mechanism of decreased coronary blood flow is due to platelets that are caused by the accumulation of platelets in the fixed, incompletely occluded coronary arteries, the destruction of the vascular endothelium, or spasticity.