Clinical end echocardiographic evolution after PTSMA
| Baseline study | 3 months after PTSMA | 12 months after PTSMA | Last control | |
| NYHA functional class | 2.8 (0.6) | 1.4 (1.1)3-165 | 1.4 (1.1)3-165 | 1.2 (1.0)3-165 |
| Maximum workload (W) | 67 (74) | 111 (50)3-160 | 113 (39)3-165 | 105 (40)3-160 |
| Left atrial diameter (mm) | 48.0 (8.1) | 45.7 (8.1)3-150 | 44.6 (6.2)3-160 | 46.3 (8.5)3-150 |
| Left ventricular end diastolic diameter (mm) | 46.6 (5.3) | 48.8 (6.1) | 50.0 (6.9)3-150 | 48.8 (6.1) |
| Septal thickness (mm) | 21.9 (3.5) | 17.0 (6.5)3-165 | 12.7 (3.5)3-165 | 11.7 (2.7)3-165 |
| Left ventricular posterior wall thickness (mm) | 14.3 (2.6) | 12.3 (5.5) | 11.3 (2.0)3-160 | 11.7 (2.2)3-160 |
| SAM (grade 1–3) | 2.4 (0.8) | 0.7 (0.9)3-165 | 0.2 (0.4)3-165 | 0.3 (0.4)3-165 |
| Mitral regurgitation (grade 1–3) | 0.9 (0.5) | 0.5 (0.5)3-150 | 0.4 (0.5)3-150 | 0.5 (0.5)3-150 |
| LVOTG at rest (mm Hg) | 60 (38) | 20 (17)3-168 | 9 (13)3-168 | 3 (6)3-168 |
| LVOTG with provocation (mm Hg) | 147 (56) | 56 (48)3-168 | 30 (43)3-168 | 12 (19)3-168 |