Table 4.
Comparison of echocardiographic parameters before and after BMV in patients with severe MS.
| Variable | Pre-BMV, mean ± SD | Post BMV, mean ± SD | p value |
|---|---|---|---|
| MVA by planimetry (cm2) | 0.81 ± 0.14 | 1.78 ± 0.22 | <0.001 |
| Peak MV gradient (mm Hg) | 22.75 ± 7.57 | 9.96 ± 3.36 | <0.001 |
| Mean MV gradient (mm Hg) | 12.72 ± 5.04 | 4.16 ± 1.28 | <0.001 |
| Left atrial dimension in PLAX view (mm) | 44.87 ± 5.50 | 40.91 ± 6.26 | <0.001 |
| LVEF (%) | 62.66 ± 5.59 | 63.81 ± 5.46 | 0.019 |
| Estimated PA systolic pressure (mm Hg) | 48.64 ± 23.93 | 36.88 ± 15.71 | 0.001 |
| RV MPI | 0.61 ± 0.13 | 0.58 ± 0.10 | 0.293 |
| TAPSE (mm) | 21.12 ± 5.00 | 23.10 ± 4.03 | 0.031 |
| S' (cm/s) | 11.98 ± 2.19 | 12.41 ± 2.07 | 0.242 |
| FAC (%) | 35.67 ± 14.83 | 47.78 ± 10.53 | <0.001 |
| IVA (m/s2) | 2.73 ± 0.76 | 2.89 ± 1.01 | 0.444 |
MVA – mitral valve area; LVEF – left ventricular ejection fraction; RV MPI – right ventricular myocardial performance index; TAPSE – tricuspid annular plane systolic excursion; S' – peak systolic velocity at lateral tricuspid annulus; FAC – fractional area change; IVA – isovolumic acceleration.