Baseline characteristics of the population of 163 patients
| Variables | Mean±SD or n (%) |
|---|---|
| Age (years) | 48±14 |
| Female sex | 137 (84) |
| NYHA functional class | |
| I | 0 (0) |
| II | 23 (14) |
| III | 131 (80) |
| IV | 9 (6) |
| Atrial fibrillation | 77 (47) |
| Previous embolic events | 13 (8) |
| Left atrium diameter | 51±9 |
| Mitral regurgitation | |
| 0 | 103 (63) |
| 1 | 58 (36) |
| 2 | 2 (1) |
| Valve anatomy (Cormier's score) | |
| 1 | 5 (3) |
| 2 | 96 (59) |
| 3 | 62 (38) |
| Valve area (echocardiography), cm2 | 1.1±0.2 |
| Mean gradient (Doppler), mm Hg | 10±5 |
NYHA,New York Heart Association.