本综合征是一种原因不明的发作性心肌缺血。其具有典型劳力型心绞痛表现,同时具备心电图ST段下移、T波低平或倒置的异常改变,但选择性冠状动脉造影无异常改变。此类病人均无糖尿病、胶原病、高血压等,故又可除外微小血管病变。含化硝酸甘油能使症状缓解。发病原因尚不清楚,其心绞痛发作可能与血红蛋白氧合离解曲线异常有关。曲线的左移或右移,可使氧的运输和利用发生障碍,使组织和心肌缺氧而诱发心绞痛。这也与缺铁有关,尤以铁缺乏伴贫 This syndrome is an unexplained episode of myocardial ischemia. It has the typical performance of angina pectoris, with ECG ST-segment down, T wave low flat or inverted abnormal changes, but no abnormal changes of selective coronary angiography. Such patients have no diabetes, collagen disease, high blood pressure, so it can be except for micro-vascular disease. Nitroglycerin can relieve symptoms. The cause of the disease is not clear, the angina pectoris may hemoglobin oxygenation dissociation curve abnormalities. Left or right curve shift, oxygen transport and utilization can occur obstacles, so that tissue and myocardial hypoxia induced angina. This is also related to iron deficiency, especially iron deficiency and poverty