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    MVP (Mitral Valve Prolapse) is when the mitral valve in the heart does
    not close after pumping blood out – blood comes back into the heart
    instead of it all going out into the body which is called regurgitation.
    When it gets bad enough that the body isn’t getting enough, or the
    heart enlarges because it has to work so hard, you have heart surgery
    and get a new valve. My nephew has a pig valve (which wears out after
    so many years and has been replaced) or a stainless steel one like my
    Dad. He sounds like the crocodile in Pinocchio. People can go for
    years without needing the surgery. My doc expects me to be able to wait
    until I’m at least 60 (13 years from now.

    Hope that very unmedical explanation helps!