Baseline characteristics for the study samples
| Age (years) | 67.1±11.7 |
|---|---|
| Female, n (%) | 71 (69.6) |
| Types of obstruction, (%) | |
| LVOT obstruction | 84 (82.3) |
| Mid-ventricular obstruction | 13 (12.7) |
| Apical obstruction | 5 (5.0) |
| NYHA functional class, n (%) | |
| I | 62 (60.8) |
| II | 39 (38.3) |
| III-IV | 1 (0.9) |
| Atrial fibrillation, n (%) | 76 (74.5) |
| eGFR (mL/min/1.732) | 75.1±26.2 |
| Echocardiographic data | |
| LVEF (%) | 73.5±8.0 |
| IVST (mm) | 14.7±4.9 |
| PWT (mm) | 10.2±1.8 |
| MWT (mm) | 16.2±4.0 |
| LV end-diastolic dimension (mm) | 43.7±5.6 |
| Left atrial dimension (mm) | 43.5±8.2 |
| Septal E/Ea | 16.5±8.9 |
| Lateral E/Ea | 12.0±5.6 |
| LV pressure gradient (mm Hg) | 42.6±40.4 |
| TR pressure gradient (mm Hg) | 27.6±8.5 |
| Medications, n (%) | |
| β-blocker | 86 (86.0) |
| Calcium channel blocker | 38 (38.3) |
| Cibenzoline | 65 (65.6) |
Data are expressed as mean±SD or number of the patients (percentage).E/Ea, peak early transmitral filling velocity/peak early diastolic mitral annulus velocity on tissue Doppler imaging; eGFR, estimated glomerular filtration rate; IVST, interventricular septal thickness; LV, left ventricular; LVEF, LV ejection fraction; LVOT, LV outflow tract; MWT, maximum LV wall thickness; NYHA, New York Heart Association; PWT, posterior wall thickness; TR, tricuspid regurgitation.