Fig. 5

Bar graphs showing the rates of change of LA structural and functional parameters in all patients with HOCM after myectomy (A), and the comparisons for the rates of change of LA parameters between two subgroups defined by whether ΔNYHA function class was ≥ 2 after myectomy (B). EF ejection fraction, LAV LA volume. Delta value (Δ) = preoperative value − postoperative value, rate of change = delta value (Δ)/preoperative value × 100%