Table 2.
Comparison of pre- and post-PMBV (at 48 hours, 3 months, and 1 year) values measured by transthoracic echocardiography
| Before PMBV | After PMBV | 3rd month | 1styear | |
|---|---|---|---|---|
| LVDD, mm | 47.44 (41-52) | 47.32 (42-52) | 47.15 (42-52) | 48.33 (43-54) |
| LVSD, mm | 31.30 (25-37) | 31.15 (25-39) | 32.22 (27-41) | 32.36 (27-42) |
| Mean GR, mm Hg | 11.3 (17-8) | 4.3 (2-6)** | 4.3 (2-6)** | 4.4 (2-6)** |
| MVA PHT, cm2 | 1.1 (0.9-1.6) | 2.2 (1.8-2.8)** | 2.2 (1.7-2.9)** | 2.1 (1.8-2.7)** |
| MVA plan, cm2 | 1.1 (1-1.6) | 2.2 (1.9-2.7)** | 2.2 (1.9-2.7)** | 2.2 (1.9-2.7)** |
| PAP mm Hg | 47.20 (25-75) | 39.49 (25-65)** | 39.26 (25-70)** | 47.29 (25-75) |
| RA maximum volume, mL | 35.13 (30-42) | 33.22 (25-39)* | 33.86 (27-39)* | 35.16 (28-41) |
| LA, mm | 48 (42-57) | 46 (39-55)* | 44 (38-52)** | 43 (38-52)** |
| RVFAC, % | 37.71 (35-41) | 42.26 (38-45)** | 40.59 (35-45)* | 37.63 (33-42) |
| TAPSE, mm | 17.24 (15-20) | 18.68 (17-22)** | 18.06 (16-21)* | 17.56 (15-20) |
| TR jet area/RAA | 0.23 (0.07-0.43) | 0.17 (0.05-0.32)** | 0.18 (0.05-0.35)* | 0.21 (0.06-0.41) |
| Wilkins score | 8 (6-10) | 6 (4-8) | 6 (4-8) | 6 (4-8) |
| E peak, cm/s | 41.98 (35-55) | 50.03 (42-56)** | 44.40 (35-56)* | 43.49 (35-55)* |
| A peak, cm/s | 45.41 (40-50) | 39.61 (35-48)** | 43.89 (37-49)* | 44.48 (34-50) |
| Deceleration time, ms | 247.47 (220-282) | 214.16 (160-260)** | 238.44 (216-280)* | 245.32 (216-285)* |
| Pre-ejection period/ejection time | 0.62 (0.52-0.68) | 0.39 (0.35-0.47)** | 0.55 (0.42-0.64)* | 0.58 (0.45-0.55)* |
| Myocardial performance index | 0.48 (0.43-0.55) | 0.42 (0.36-0.46)** | 0.44 (0.40-0.50)* | 0.48 (0.43-0.55) |
Results are shown as rank (min-max) value.
LVDD -left ventricular diastolic diameter; LVSD - left ventricular systolic diameter; Mean GR - mitral mean gradient; MVA - planimetric mitral valve area; PAP - pulmonary artery pressure; PHT - pressure half-time; PMBV - percutaneous balloon mitral valvuloplasty; RA - right atrium; RV - right ventricle; RVFAC - RV fractional area change; TAPSE - tricuspid annular plane systolic excursion; TR jet area/RAA - tricuspid valve regurgitation area/right atrial area
P<0.05 comparison with baseline after PMBV and at 3 months and 1 year
P<0.01 comparison with baseline after PMBV and at 3 months and 1 year