cardiac valvular incompetence

car·di·ac val·vu·lar in·com·pe·tence

failure of a valve to perform its fundamental function: insurance of one-way flow; manifested by regurgitation of blood in the opposite direction when the valve is supposed to be closed.

car·di·ac val·vu·lar in·com·pe·tence

(kahr'dē-ak val'vyū-lăr in-kom'pĕ-tĕns)
Failure of a valve to close its aperture completely and prevent regurgitation of blood.
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