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Comparison of mechanical dispersion between controls, all mitral valve prolapse patients (MVP total), arrhythmic MVP patients (A-MVP) and non-arrhythmic MVP patients (NA-MVP). A-MVP patients had significantly higher mechanical dispersion compared with controls (mean 59 vs 42 ms, p<0.001) and NA-MVP patients (mean 59 vs 43 ms, p<0.001). There was no difference in mechanical dispersion between the control and the NA-MVP groups (p=0.78).
