Table 4.
Univariate and multivariate analysis showing potential factors associated with the rate of change of εa
| Variables | Univariate | Multivariate | ||
|---|---|---|---|---|
| r | P | Adjusted β | P | |
| Age at surgery (year) | − 0.03 | 0.79 | ||
| Male | 0.14 | 0.19 | ||
| Duration from myectomy to latest follow-up CMR (month) | 0.05 | 0.68 | ||
| History of atrial fibrillation | − 0.10 | 0.37 | ||
| Preoperative beta-blockers | 0.06 | 0.61 | ||
| Preoperative calcium channel blockers | − 0.11 | 0.31 | ||
| Postoperative beta-blockers | − 0.12 | 0.26 | ||
| Postoperative calcium channel blockers | 0.07 | 0.54 | ||
| Systolic blood pressure (mmHg) | 0.24 | 0.02 | 0.18 | 0.06 |
| Diastolic blood pressure (mmHg) | 0.06 | 0.58 | ||
| Mitral valve repair | − 0.14 | 0.20 | ||
| Mitral E/A ratio < 1 | − 0.05 | 0.62 | ||
| Maximal LV wall thickness (mm) | 0.13 | 0.22 | ||
| LV mass index (g/m2) | 0.01 | 0.91 | ||
| Late gadolinium enhancement of LV (%) | 0.08 | 0.46 | ||
| LAVmin index (ml/m2) | − 0.47 | < 0.001 | − 0.39 | < 0.001 |
| ΔMitral regurgitation degree | − 0.29 | 0.006 | − 0.05 | 0.66 |
| ΔLV outflow tract gradient (mmHg) | − 0.35 | 0.001 | − 0.29 | 0.003 |
| ΔStroke volume (ml) | − 0.19 | 0.082 | ||
Delta value (Δ) = preoperative value − postoperative value, rate of change = delta value (Δ)/preoperative value × 100%
LV left ventricular, LAV left atrial volume