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USC - University of Southern California Cardiothoracic Surgery at University of Southern California Keck School of Medicine
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Glossary of Terms

Stenosis means "narrowing". Mitral stenosis means narrowing of the mitral valve, and aortic stenosis means narrowing of the aortic valve. A stenotic valve results in a build up of pressure. Valve stenosis is caused by:

  • a congenital birth defect
  • progressive wear and tear or hardening of a valve from old age
  • scarring from disease, including rheumatic fever as a child or young adult
  • infection of a valve or heart muscle

Related link: Heart Valve Surgery

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