The aortic valve is situated at the opening of the left ventricle, one of the chambers of the heart. The valve opens when the ventricle pumps out blood and closes when the ventricle stops beating. This is to prevent the blood from rushing back into the ventricle. Aortic stenosis is a condition where the valve does not open completely. This can be caused by:
- Natural degeneration that causes accumulation of calcium deposits causing the opening to narrow.
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