Enlargement of the left atrium is an organic pathological change of the heart, which can be seen in a variety of organic heart disease, such as hypertensive heart disease, dilated cardiomyopathy, aortic valve stenosis or closure insufficiency.
1. Hypertensive heart disease: due to long-term high blood pressure leads to increased cardiac afterload, the heart compensatory ejection leads to left ventricle and left atrium enlargement.
2. Dilated cardiomyopathy: a cardiomyopathy mostly caused by genetic factors, one of the manifestations of which is enlargement of the whole heart, including enlargement of the left atrium.
3. Aortic valve stenosis or insufficient closure: the former leads to an increase in the afterload of the left ventricle, and compensatory contraction of the heart with ejection of blood leads to enlargement of the left atrium and ventricle; the latter mainly leads to an increase in the preload of the left ventricle, and compensatory ejection of blood leads to enlargement of the left atrium and ventricle.
In addition, there are many other diseases that can lead to left atrial enlargement, the discovery of left atrial enlargement need to be timely hospital consultation, please ask the doctor to identify the cause of the diagnosis and treatment.