Hypertrophic cardiomyopathy is characterized by hypertrophy: First, the clinical manifestations of hypertrophic cardiomyopathy are chest suffocation, chest pain, palpitations, tightness, dyspnea, weakness, dizziness, etc.; Second, hypertrophic cardiomyopathy may have pathological murmurs, increased heart rate, arrhythmia, and secondary wet or dry rales in both lungs; Third, if hypertrophic cardiomyopathy is examined, the electrocardiogram may have If hypertrophic cardiomyopathy is examined, the electrocardiogram may show secondary myocardial ischemia, such as T-wave inversion, ST-segment elevation or depression in some leads, and arrhythmias, such as atrial premature beats and ventricular premature beats, etc. The cardiac ultrasound may reveal hypertrophy of atrial or ventricular muscle, or even secondary valve incompetence or stenosis; iv.