Severe mitral valve regurgitation in a 23-year-old man.

Early surgical repair of severe mitral valve regurgitation in symptomatic and asymptomatic patients is associated with better long-term outcomes than watchful waiting. This article describes an asymptomatic, 23-year-old man whose significant cardiac murmur (later confirmed to be mitral regurgitation) was found during a routine examination for a prescription refill of an antiviral drug.