一、引起 ST 段降低的疾病:1.缺血性心脏疾患。典型的病例可呈现缺血性 ST 段降低及冠状 T 波,很多情况下出现非特异性的 ST—T改变。2.心室肥厚,心室负荷过重: 引起左室负荷过重的疾病有高血压病,主动脉辨病变,慢性肾炎,肾盂肾炎,主动脉炎,主动脉缩窄等。引起右室负荷过重的有肺动脉狭窄,二尖瓣损害,Follot 四联 First, cause ST segment depression diseases: 1. Ischemic heart disease. Typical cases can present ischemic ST segment depression and coronary T wave, in many cases non-specific ST-T changes. 2 ventricular hypertrophy, ventricular overload: caused by left ventricular overload disease hypertensive disease, aortic disease, chronic nephritis, pyelonephritis, aortitis, aortic constriction. Right ventricular overload caused by pulmonary stenosis, mitral valve damage, Follot quadruple