What is "trivial mitral valve regurgitation"?

Very small leak: The mitral valve prevents blood from flowing backwards out of the main pumping chamber of the heart (left ventricle). When a valve leaks we call this regugitation or insufficiency. One method of describing a leak is to classify it as trivial, mild, moderate, or severe. A trivial leak should not affect you heart in any way. A lot of people of this and never need anything done for it.