Posted: 30/10/2015 at 00:57
A word on heart murmurs. There is no such thing as a diagnosis of a heart murmur, despite what your doctors are telling you. A heart murmur is simply the noise made by blood that is not flowing in a laminar, or smooth manner. It happens when blood flows through an area that is narrow, or around a sharp corner, or against an obstruction, or when it flows more quickly or strongly through a normal area. It is not a diagnosis. It is a physical sign.
The most common murmur is a physiologic one - increase flow from anemia, or strong flow from a good, athletic heart.
The most common murmurs that are not physiologic are usually the result of blood flowing through a narrow area that should not be there - a hole between the two sides of the heart (VSD, ASD or PFO).
In this day and age, any new murmur should be investigated properly. If the doctor really thinks it's a leaking valve, it is essential to have that investigated prior to continuing vigorous exercise. You most likely well able to continue running - but only after you know what it is. That is irresponsible advise given.