The electrocardiogram of clockwise rotation usually refers to the clockwise rotation of the heart along its long axis. Clockwise rotation indicates that the right ventricle rotates forward and left, while the left ventricle rotates backward accordingly. As a result, the right ventricle occupies the majority of the precordial area, and during clockwise rotation the patient will experience significant chest tightness, shortness of breath, precordial discomfort, and sometimes fatigue and exhaustion. This condition is common in right ventricular hypertrophy, hypertensive heart disease, obstructive hypertrophic cardiomyopathy, dilated cardiomyopathy, congenital heart disease, and heart valve disease, all of which will have patients with clinical symptoms of clockwise rotation. In terms of clinical manifestations, patients will have a series of symptoms such as dyspnea after exertion, fatigue, chest tightness, shortness of breath, palpitations and so on.