And a simple answer to that is "no." A patient who has simple mitral valve prolapse picked up by their doctor on the stethoscope does not need to be treated as long as the valve is working well, as long as the valve is not leaking. But what is necessary, once you have mitral valve prolapse, what is necessary is that it be followed carefully to make sure that it stays stable and to identify which patients, if any, develop abnormalities of the function of the valves, such as leaking.