Mitral Valve Regurgitation

I am soon to be a 35 year old medical student and currently work for an NHS ambulance service as an Emergency Medical Technician. At 15 years of age I was diagnosed with minimal mitral valve regurgitation which has remained asymptomatic since.  I've had had repeat ECG's (the last in 2013) and always get told that it is within normal ranges. Back in 2009 I was told that MVR is common and remains undiagnosed in a large proportion of the population.  A figure for the amount of people who go undiagnosed was thrown in my direction, but I cannot remember what it was...does anyone know what that figure is? Is Triscuspid Valve Regurgitation also common?  Does it also go undiagnosed like MVR? Can I thank you in advance for your replies.
Source: Doc2Doc BMJ Cardiology - Category: Cardiology Authors: Source Type: forums