In the United States, about 2.5% of the population has moderate to severe<unk> . The prevalence of these diseases increase with age, and 75 year-olds in the United States have a prevalence of about 13%. In industrially underdeveloped regions, rheumatic disease is the most common cause of valve diseases, and it can cause up to 65% of the valve disorders seen in these regions. Aortic stenosis Aortic stenosis is typically the result of aging, occurring in 12.4% of the population over 75 years of age, and represents the most common cause of outflow obstruction in the left ventricle. Bicuspid aortic valves are found in up to 1% of the population, making it one of the most common cardiac abnormalities. Aortic regurgitation The prevalence of aortic regurgitation also increases with age. Moderate to severe disease has a prevalence of 13% in patients between the ages of 55 and 86. This valve disease is primarily caused by aortic root dilation, but infective endocarditis has been an increased risk factor. It has been found to be the cause of aortic regurgitation in up to 25% of surgical cases. Mitral stenosis Mitral stenosis is caused almost exclusively by rheumatic heart disease, and has a prevalence of about 0.1% in the United States. Mitral stenosis is the most common<unk>  in pregnancy. Mitral regurgitation Mitral regurgitation is significantly associated with normal aging, rising in prevalence with age. It is estimated to be present in over 9% of people over 75.
Valvular heart disease
Dilated cardiomyopathy
Heart valve dysplasia
Arteriosclerotic heart disease
Primary tumors of the heart
Autoimmune heart disease
Coronary artery disease
Pulmonary heart disease