How many years you can live with left ventricular enlargement is usually related to the size of the left ventricle. In the case of mild left ventricular enlargement, life expectancy is often not affected. In the case of significant left ventricular enlargement, malignant arrhythmias such as ventricular tachycardia, ventricular fibrillation, and acute left heart failure can occur at any time and can be life-threatening, and the general 5-year survival rate is often less than 50%. The causes of LV enlargement include ischemic cardiomyopathy, dilated cardiomyopathy, and hypertensive heart disease. Ischemic cardiomyopathy is often caused by significant remodeling of the ventricles after myocardial infarction, resulting in an enlarged heart, often combined with ventricular wall tumors. Common causes of dilated cardiomyopathy, are viral myocarditis. Hypertensive heart disease causes enlargement of the left ventricle due to chronic hypertension, often combined with septal hypertrophy. In addition, stress cardiomyopathy can also cause significant enlargement of the left ventricle, with ballooning of the left ventricle, also known as octopus basket syndrome, which can also be life-threatening in severe cases.