Fig. 5. Left atrium (LA) function evaluation in a patient with severe asymptomatic mitral regurgitation (MR). The LA ejection fraction calculated by LA.

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Fig. 5. Left atrium (LA) function evaluation in a patient with severe asymptomatic mitral regurgitation (MR). The LA ejection fraction calculated by LA maximum volume (130 mL in A)-LA minimum volume (80 mL in B) divided by LA maximum volume is decreased to 38%. The LA strain values (i.e., reservoir, conduit, and contractile function) calculated by speckle tracking imaging (C) in the same patient with severe asymptomatic MR are decreased. Korean Circ J. 2015 Mar;45(2):96-105. http://dx.doi.org/10.4070/kcj.2015.45.2.96