本研究用血管内超声检查在造影正常或轻度狭窄的冠脉之局部痉挛处是否存在粥样硬化,并评价粥样硬化在发生血管痉挛中的作用。 方法 22例运动试验阴性的胸痛患者,其中16例有休息时胸痛,6例休息及运动时均有胸痛;在自发性心绞痛发作时,14例ECG有ST段抬高>0.1mv。男性20例,女性2 This study used endovascular ultrasound to detect the presence or absence of atherosclerosis in the local spasm of normal or mildly angulated coronary arteries and to evaluate the role of atherosclerosis in the development of vasospasm. Methods Twenty-two patients with chest pain with negative exercise test were included in the study. Sixteen patients had chest pain during rest and six patients had rest and exercise chest pain. During the onset of spontaneous angina, ST-segment elevation was> 0.1 mv in 14 patients. 20 males and 2 females