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Definition
By Mayo Clinic staffAortic valve stenosis — or aortic stenosis — occurs when the heart's aortic valve narrows. This narrowing prevents the valve from opening fully, which obstructs blood flow from your heart into your aorta and onward to the rest of your body.
When the aortic valve is obstructed, your heart needs to work harder to pump blood to your body. Eventually, this extra work weakens your heart and limits the amount of blood it can pump, leading to symptoms, such as fatigue and dizziness.
If you have severe aortic valve stenosis, you'll usually need surgery to replace the valve. Left untreated, aortic valve stenosis can lead to serious heart problems.
- Aortic valve stenosis (AS) and aortic insufficiency (AI). American Heart Association. http://www.americanheart.org/presenter.jhtml?identifier=1659. Accessed July 6, 2009.
- Aortic stenosis. The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merck.com/mmpe/sec07/ch076/ch076c.html. Accessed July 6, 2009.
- Grimard BH, et al. Aortic stenosis: Diagnosis and treatment. American Family Physician. 2008;78:717.
- Otto CM, et al. Valvular heart disease. In: Libby P, et al., eds. Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine. 8th ed. Philadelphia, Pa.: Saunders Elsevier; 2007. http://www.mdconsult.com/book/player/book.do?method=display&type=bookPage&decorator=header&eid=4-u1.0-B978-1-4160-4106-1..50065-0&uniq=148441160&isbn=978-1-4160-4106-1&sid=860585891. Accessed July 6, 2009.
- Otto CM. Pathophysiology and clinical features of valvular aortic stenosis in adults. http://www.uptodate.com/home/index.html. Accessed July 6, 2009.
- Ardehali R, et al. Valvular heart disease. In: Nilsson KR, et al. The Osler Medical Handbook. Philadelphia, Pa.: Saunders Elsevier; 2006. http://www.mdconsult.com/das/book/body/148441160-4/860446560/1387/28.html#4-u1.0-B0-323-03748-8..50017-8_181. Accessed July 6, 2009.
- Carabello BA. Valvular heart disease. In: Goldman L, et al., eds. Goldman: Cecil Medicine. 23rd ed. Philadelphia, Pa.: Saunders Elsevier; 2007. http://www.mdconsult.com/das/book/body/148441160-6/860446560/1492/318.html#4-u1.0-B978-1-4160-2805-5..50080-X_3105. Accessed July 6, 2009.
- Otto CM. Medical therapy in asymptomatic aortic stenosis in adults. http://www.uptodate.com/home/index.html. Accessed July 6, 2009.
- Grogan M (expert opinion). Mayo Clinic, Rochester, Minn. July 19, 2009.
