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本文讨论在运动试验中测量最大 ST/HR 斜率的经验,并论证其准确性。许多情况可以导致运动时发生心肌缺血。最常见的是粥样硬化引起的冠状动脉疾病。其次,心肌桥使血管腔在心室收缩和舒张早期受挤压以及冠状动脉痉挛亦可产生心肌缺血。瓣膜狭窄或关闭不全,高血压或心肌病所致左心室扩张或肥厚,由于“瀑布”(water-fall)机制或冠脉灌注压降低及供血不足,亦可发生心
This article discusses the experience of measuring maximum ST / HR slope in exercise testing and demonstrates its accuracy. Many conditions can lead to myocardial ischemia during exercise. The most common is coronary artery disease caused by atherosclerosis. Second, the myocardial bridge causes the lumen of the blood vessel to contract and relax early in the systole, and coronary artery spasm can also produce myocardial ischemia. Valvular stenosis or insufficiency, left ventricular dilatation or hypertrophy due to hypertension or cardiomyopathy, heart formation due to “water-fall” mechanisms or decreased coronary perfusion pressure and insufficiency of blood supply