Table 3. Comparison of preoperative and postoperative echocardiographic indicators between the two groups.
| Variable | Preoperative | Postoperative | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Calcification group (N=34) | Non-calcification group (N=70) | t/Z/χ2 | P value | Calcification group (N=34) | Non-calcification group (N=70) | t/Z/χ2 | P value | ||
| LAD (mm) | 45.25±7.86 | 38.26±5.15 | −3.78 | <0.01 | 40.90±5.83 | 36.09±5.83 | −2.93 | <0.01 | |
| LVEDD (mm) | 42.85±6.08 | 41.30±3.99 | 1.32 | 0.18 | 43.25±4.21 | 41.92±3.84 | 1.31 | 0.19 | |
| RAD (mm) | 42.33±6.90 | 39.04±5.22 | 2.68 | <0.01 | 41.71±7.41 | 37.46±4.63 | 2.97 | <0.01 | |
| RVD (mm) | 20.60±4.17 | 19.60±2.44 | 1.01 | 0.31 | 21.05±2.89 | 19.95±2.41 | 1.68 | 0.09 | |
| EF (%) | 58.60±6.15 | 57.80±6.74 | 0.47 | 0.63 | 60.15±5.00 | 59.50±7.60 | 0.35 | 0.72 | |
| E (cm/s) | 88.53±20.57 | 67.44±21.00 | 4.78 | <0.01 | 85.37±16.05 | 76.49±24.80 | −2.46 | 0.01 | |
| e' (cm/s) | 10.80±3.63 | 10.93±4.29 | −0.13 | 0.89 | 8.55±2.83 | 8.75±3.06 | −0.27 | 0.78 | |
| E/e' ratio | 8.52±2.65 | 7.58±5.21 | 0.77 | 0.43 | 11.13±3.97 | 10.01±5.42 | 0.84 | 0.39 | |
| Ventricular septal bounce | 33 (97.1) | 57 (81.2) | 4.79 | 0.03 | 3 (8.8) | 5 (7.1) | 0.09 | 0.76 | |
| Mitral regurgitation | 15 (46.8) | 18 (33.3) | 1.55 | 0.21 | 12 (37.5) | 12 (21.8) | 2.49 | 0.11 | |
| Tricuspid regurgitation | 16 (50) | 31 (56.4) | 0.44 | 0.50 | 14 (43.7) | 28 (50.9) | 0.41 | 0.51 | |
Data are presented as mean ± standard deviation or number (%). E, early diastolic peak flow velocity of the mitral valve; e', early diastolic peak velocity of the mitral annulus; EF, ejection fraction; LAD, left atrial diameter; LVEDD, left ventricular end-diastolic diameter; RAD, right atrial transverse diameter; RVD, right ventricular diameter.