The most potent risk factor in the development of<unk>  stenosis in developing countries is rheumatic fever. Other risk factors include history of rheumatic fever and untreated streptococcus infection, calcium deposition<unk>  annular calcification), congenital disorder (babies with narrowed<unk>  valve), radiation (chest radiation), autoimmune diseases (Lupus).
Mitral stenosis risk factors
Tricuspid regurgitation risk factors
Tricuspid stenosis risk factors
Aortic regurgitation risk factors
Hypertrophic cardiomyopathy risk factors
Bicuspid aortic stenosis risk factors
Aortic stenosis risk factors
Left ventricular aneurysm risk factors