Table 3:
Echocardiographic and functional parameters at baseline and follow-up
| Baseline (N = 113) | 5 days after surgery (N = 110) | 12 months after surgery (N = 104) | P-value | |
|---|---|---|---|---|
| Systolic blood pressure (mmHg) | 135 ± 12 | 125 ± 15 | 138 ± 14 | 0.07 |
| Diastolic blood pressure (mmHg) | 85 ± 8 | 75 ± 5 | 83 ± 5 | 0.009 |
| Left ventricular ejection fraction (%) | 52.8 ± 5.7 | 54.1 ± 4.6 | 54.2 ± 5.1 | 0.05 |
| Indexed left ventricular mass (g/m2) | 175.9 ± 45.3 | 174 ± 45.7 | 159.2 ± 42.9 | 0.009 |
| Peak gradient (mmHg) | 95.6 ± 31.5 | 30.6 ± 6.3 | 25.1 ± 4.4 | <0.001 |
| Mean gradient (mmHg) | 55.7 ± 13.4 | 15.1 ± 4.3 | 13.1 ± 3.7 | <0.001 |
| Left ventricular diastolic diameter (mm) | 46.2 ± 5.7 | 45.8 ± 5.9 | 44.9 ± 5.8 | 0.06 |
| Left ventricular systolic diameter (mm) | 29.6 ± 5.8 | 30.2 ± 6.1 | 31.1 ± 5.9 | 0.06 |
| Indexed left atrial volume (ml/m2) | 35.2 ± 9.5 | 36.4 ± 10.9 | 29.1 ± 6.3 | <0.001 |
| Diastolic function | ||||
| Normal | – | – | 14 (13.4%) | <0.001 |
| Mild (impaired relaxation) | 28 (24.7%) | – | 65 (62.5%) | <0.001 |
| Moderate (pseudonormal) | 71 (62.8%) | – | 17 (16.4%) | <0.001 |
| Severe (restrictive) | 14 (12.5%) | – | 8 (7.7%) | 0.3 |
| B-type natriuretic peptide (pg/ml) | 295 ± 125 | 430 ± 242 | 245 ± 168 | 0.01a |
| Indexed effective orifice area cm2/m2 (mean) | – | 0.75 ± 0.07 | 0.76 ± 0.06 | <0.001 |
Values expressed as mean ± SD or n (%).
aBaseline vs 12 months after surgery.