Fig. 2
From: The outcomes of reoperation for congenital mitral valve diseases in children
Kaplan–Meier survival rate (A) and freedom from the second MV reoperation (B) in the total cohort. Kaplan–Meier freedom from mechanical mitral valve replacement with (red line) and without (blue line) the use of the double-orifice MV technique (C). Confidence intervals are indicated as dotted lines. Significant differences were noted for freedom from mechanical mitral valve replacement. MV, mitral valve