某些心绞痛患者运动初始发生的心绞痛,可随着运动的持续进行而自行消失,或在停止后再运动时不再发生心绞痛,此种后阶段出现适应的情形称为加温现象(Warm up phenomenon)或预习(Walkthrough)心绞痛,其机制尚未明确,本文对此作了探讨。方法:11例受检者均有稳定型劳力性心绞痛病史,且冠状动脉造影提示左前降支近端狭窄≥70%,左主干、回旋支或右冠状动脉狭窄≤50%。试验前一天停用所有抗心绞痛药物,试验时作心房或冠状窦调搏,嘱病人有类似心绞痛样发作时报告之,心绞痛按其程度分成十个等级,第1级为刚能觉察的症状,第10级为极端严重的不适。 Some patients with angina pectoris initial onset of angina can disappear on their own with the continuation of exercise, or no longer after exercise stopped angina pectoris, this latter phase of adaptation occurs when the situation is called the phenomenon of warming (Warm up the phenomenon) ) Or Walkthrough angina, the mechanism is not yet clear, this article discussed. Methods: All of the 11 subjects had a history of stable angina pectoris. Coronary angiography showed that the proximal stenosis of the left anterior descending artery was ≥70%. The stenosis of left main trunk, circumflex or right coronary artery was ≤50%. All anti-anginal drugs were discontinued on the day before the test. Atrial or coronary sinus pacing was carried out during the test. Patients were instructed to report similar angina-like attacks. Angina pectoris was divided into ten grades according to the degree. Grade 1 was just perceptible symptoms, Level 10 is extremely serious discomfort.