50-year-old person left atrial enlargement blood pressure should be controlled at 140/90mmHg below better. 50-year-old hypertensive patients, if there is an enlargement of the left atrium, consider and long-term elevated blood pressure related, usually pay attention to strengthen the monitoring of blood pressure, the primary goal of blood pressure control should be to meet the standard, <140/90mmHg, in the normal range, the lower the level of blood pressure, the better. Long-term hypertension will increase the load of the left ventricle, which will increase the pressure of the left atrium, under the action of pressure will appear left atrial enlargement, left atrial enlargement can be regarded as hypertensive patients with target organ damage, some patients in the case of atrial enlargement can occur atrial fibrillation. Hypertensive patients with atrial enlargement should pay attention to strengthen the control of blood pressure, choose the appropriate medication under the guidance of the physician, to ensure stable blood pressure levels, and regular cardiac ultrasound examination.