Epidemiology
Mitral regurgitation (MR) is one of the most common types of valvular heart disease.[2] Although the exact incidence and prevalence of MR is unknown, it has been suggested that the prevalence is 2% in the general population and is more common with advancing age.[1] Primary MR accounts for an estimated 35% of cases, while 65% of cases are secondary to dilation and heart failure.[3]
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