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The aortic valve is located on the left side of the heart and controls blood flow out of the left ventricle, the heart chamber responsible for pumping blood into the large artery that shares this supply with the rest of the body — the aorta. Aortic stenosis affects the aortic valve, preventing it from working effectively and reducing the heart's ability to transfer blood and oxygen. Over time, this can lead to serious complications.

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1. How Aortic Stenosis Begins

Over time, a build-up of calcium can develop in the aortic valve, causing the valve to narrow and making the tissue less supple. The narrowing and stiffening of the valve eventually interrupts proper functioning, affecting the flow of blood from the left ventricle to the aorta and the amount of pressure in the heart.

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