Preprocedure related variables in 532 patients
| Variable | Patients (n) |
|---|---|
| Age (years) | |
| ⩽ 65 | 435 |
| > 65 | 97 |
| Body surface area (m2) | |
| ⩽ 1.8 | 433 |
| > 1.8 | 99 |
| Male/female | 108/424 |
| New York Heart Association functional class | |
| ⩽ II | 284 |
| > II | 248 |
| Cardiac rhythm | |
| Sinus | 294 |
| Atrial fibrillation | 238 |
| Previous surgical commissurotomy or PMC | 96 |
| Cardiothoracic ratio | |
| ⩽ 0.54 | 341 |
| > 0.54 | 191 |
| Echo score | |
| 1 | 236 |
| 2 | 220 |
| 3 | 76 |
| Mitral regurgitation (colour flow imaging) | |
| No | 156 |
| Yes | 376 |
| Mitral valve area (planimetry) (cm2)1-150 | |
| < 1.0 | 132 |
| ⩾ 1.0 | 276 |
| Left atrial diameter (TM echo) (mm) | |
| ⩽ 55 | 377 |
| > 55 | 155 |
| Mean transmitral gradient (Doppler) (mm Hg) | |
| ⩽ 10 | 336 |
| > 10 | 196 |
| Mitral valve area (haemodynamic) (cm2) | |
| < 1.0 | 171 |
| ⩾ 1.0 | 361 |
| Mean pulmonary artery pressure (mm Hg) | |
| < 25 | 291 |
| ⩾ 25 | 241 |
| Mean left atrial pressure (mm Hg) | |
| < 20 | 379 |
| ⩾ 20 | 153 |
| Balloon | |
| Double balloon | 161 |
| Inoue balloon | 371 |
↵1-150 Available in 408 of 532 patients.
PMC, percutaneous mitral commissurotomy.