Tricuspid valve stenosis is most often caused by the following:
- Endocarditis – This condition occurs when the inner lining of the heart (endocardium) or the heart’s valves become infected by bacteria or other germs.
- Rheumatic fever – This condition results from a rare progression of strep throat that damages the heart valves as the body produces antibodies to fight the strep infection.
Rare causes of tricuspid stenosis can include the following:
- Congenital birth defects
- Systemic lupus erythematosus (SLE), an autoimmune disease
- Right atrial myxoma, a noncancerous tumor in the right side of the heart
- Metastatic tumors
- Chest radiation therapy from cancer treatments