Alcohol septal ablation for hypertrophic obstructive cardiomyopathy: do mitral valve leaflet length, septal thickness, or sex affect the outcome?

Their study used three cutoffs (i.e., < 20 mm, 20–24 mm, and ≥ 25 mm), where the ≥ 25 mm group showed a trend of higher residual gradients on follow-up, although this was not significant when compared with the other groups [ 12 ].

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