This scarring can narrow the valve and make it harder for the valve to open properly or to close completely.
In turn, your heart has to work harder to
pump blood to the rest of your body. This
valve damage can lead to a condition called rheumatic heart disease, which, in time, can lead to congestive heart failure....the heart weakens due to overwork caused by a diminished supply of blood pumped into circulation as some blood backflows into the left atrium.