Comparison of echocardiographic variables related to MV anatomy and function
| Non-survivors mean±SD (n=29) | Survivors mean±SD (n=46) | p Value | |
|---|---|---|---|
| MV VC (cm) | 0.61±0.15 | 0.57±0.14 | 0.213 |
| MV JA/LAA (%)* | 0.48±0.14 | 0.39±0.1 | 0.001 |
| PISA radius (cm) | 0.99±0.24 | 1.09±0.26 | 0.091 |
| Vr (cm/s) | 36.3±2.5 | 36.9±4.5 | 0.535 |
| MR Vmax (m/s) | 5.08±0.79 | 4.99±0.75 | 0.615 |
| MR VTI (cm) | 160.1±25.8 | 155.9±38.2 | 0.604 |
| EROA (mm2) | 46.7±23 | 59.2±32.3 | 0.074 |
| MR Rvol (mL/beat) | 73.2±33.9 | 83.4±38.7 | 0.249 |
| MR RF (%) | 59±11% | 56±15% | 0.511 |
| Abnormal PV flow (%) | 48% | 54% | 0.639 |
| MR functional (%) | 41% | 22% | 0.069 |
| MR eccentric (%) | 64% | 78% | 0.242 |
| Annular calcification (%)* | 70% | 36% | 0.021 |
*p<0.05.
EROA, effective regurgitant orifice area; JA/LAA, ratio of jet area to left atrial area; MR, mitral regurgitation; MV, mitral valve; PV, pulmonary vein; PISA, proximal isovelocity surface area; RF, regurgitant fraction; Rvol, regurgitant volume; VC, vena contracta; VFR, volume flow rate; Vr, aliasing velocity at the radial distance r (cm/s) (Vr); VTI, velocity time integral.