Myocardial ischemia is related to left ventricular hypertension. Myocardial ischemia refers to a decrease in blood perfusion to the coronary arteries of the heart, resulting in an imbalance of blood supply and demand to the myocardium, which often manifests itself as angina pectoris, myocardial infarction, arrhythmia, heart failure, etc. Left ventricular hypertension is often associated with hypertension and hypertrophic obstructive cardiomyopathy, both of which can develop leading to myocardial hypertrophy, and hypertrophy can lead to relative myocardial ischemia. Physiologically, coronary stenosis results in inadequate left ventricular ejection each time, with multiple accumulations of blood volume and increased resistance, and in order to do work to overcome resistance, the myocardium first strengthens myocardial contractility through abnormal self-regulation. However, when the load of the heart exceeds the regulatory capacity, the myocardium begins to thicken and coarsen, and the coronary vessels that originally supplied oxygen to the myocardium will not increase significantly with it. At this time, part of the myocardium will be ischemic due to insufficient blood and oxygen supply, which is manifested as high pressure of the left ventricle on the electrocardiogram. It is recommended that patients with the above symptoms go to regular hospitals in time, and standardize treatment under the guidance of doctors to avoid delays.