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缺血性心脏病是一个具有多种因素的疾病,其中之一是冠状动脉痉挛。冠状动脉粥样硬化与缺血性心脏病症状的关系并不呈线性,即可说明这点。例如,仅10％的冠状动脉粥样硬化病人有症状;症状的严重程度与粥样硬化的严重程度的相关关系差;约10％心绞痛或心肌梗塞病人的冠状动脉正常或接近正常;稳定型与不稳定型心绞痛患者的冠状动脉粥样硬化程度相仿,但不稳定型心绞痛发生心肌梗塞与猝死等并发症的危险性远为较高。在变异型心绞痛病人,血液动力学监护显示在发作前并无增加心肌氧耗量的因素,动脉造影证明
Ischemic heart disease is a disease with many factors, one of which is coronary artery spasm. The relationship between coronary atherosclerosis and ischemic heart disease symptoms is not linear, to illustrate this point. For example, only 10% of patients with coronary atherosclerosis have symptoms; the severity of the symptoms correlates poorly with the severity of atherosclerosis; the coronary arteries are normal or nearly normal in about 10% of patients with angina or myocardial infarction; Coronary atherosclerosis in patients with unstable angina pectoris is similar, but the risk of complications such as myocardial infarction and sudden death in patients with unstable angina pectoris is far higher. In variant angina patients, hemodynamic monitoring showed no increase in myocardial oxygen consumption prior to the onset of the factor, as evidenced by arteriography