The first of the cardiac complications of hypertension is myocardial hypertrophy, long-term high blood pressure is likely to lead to the heart of the left ventricle pressure overload, which leads to myocardial hypertrophy, this is the earliest change, but with the progression of hypertension, heart disease, over time there will be left ventricle enlargement, at this time is also prone to coronary atherosclerotic heart disease, because high blood pressure on the heart of the damage not only is the myocardial hypertrophy, change in size, but also prone to the narrowing of cardiac blood vessels. Large, but also prone to the narrowing of the blood vessels of the heart. If the heart is enlarged, the patient will show signs of heart failure and will have difficulty breathing during activities and exercise. If coronary artery disease is present, the patient may experience chest pain or tightness during exercise. Once the patient experiences these symptoms, he or she should go to the cardiologist for a closer examination.