Baseline echocardiographic parameters of the FMR subgroups
| Type of FMR | AFMR n=5562 | VFMR n=8442 | Overall n=14 004 | P value |
| Moderate LA dilatation | – | 1353 (16) | – | – |
| Severe LA dilatation | 5562 (100) | 5454 (65) | 11 016 (79) | <0.001 |
| Moderate LV dilatation | – | 2178 (26) | – | – |
| Severe LV dilatation | – | 2189 (26) | – | – |
| LV EF (%) | 66±10 | 37±14 | 48±19 | <0.001 |
| Moderate MR | 4289 (77) | 6512 (77) | 10 801 (77) | NS |
| Severe MR | 1273 (23) | 1930 (23) | 3203 (23) | NS |
| ≥Moderate RV dysfunction | 72 (3) | 473 (15) | 545 (10) | <0.001 |
| ≥Moderate TR | 2112 (56) | 2388 (53) | 4500 (54) | 0.005 |
| eRVSP ≥45 mm Hg | 662 (35) | 1232 (38) | 1894 (37) | 0.008 |
Data are n (%), median (IQR) or mean±SD unless otherwise specified.
eRVSP, estimated right ventricular systolic pressure; LA, left atrium; LVEF, Left ventricular ejection fraction; MR, mitral regurgitation; NS, not significant; RV, right ventricular; TR, tricuspid regurgitation.