Answer:
A prolapse is when the valve flaps bulges into the left atrium causing a leak. A prolapse can cause regurgitation. This is when the blood flow is backwards. Stenosis is when the aortic valve is narrowed. This blocks the oxygenated blood flow to the body.
All of these problems effects a proper blood flow and if the flow isn't correct then body tissues that need oxygenated blood won't receive it properly.