Table 4. Univariable and multivariate linear regression analysis of RAESV, RVEDV, PH severity, and TR severity used to predict 4DE TV characteristics in high-quality image cases.
| Variables | Univariable analysis | Multivariate analysis | |||
|---|---|---|---|---|---|
| β (95% CI) | P value | β (95% CI) | P value | ||
| Annulus area 3D (cm2) | |||||
| RAESV (mL) | 0.041 (0.024–0.059) | <0.001 | |||
| RVEDV (mL) | 0.039 (0.024–0.054) | <0.001 | 0.042 (0.029–0.056) | <0.001 | |
| PH severity | 1.037 (0.408–1.667) | 0.002 | |||
| TR severity | 1.437 (0.721–2.153) | <0.001 | |||
| Annulus perimeter (cm) | |||||
| RAESV (mL) | 0.022 (0.012–0.031) | <0.001 | |||
| RVEDV (mL) | 0.020 (0.012–0.028) | <0.001 | 0.022 (0.015–0.029) | <0.001 | |
| PH severity | 0.570 (0.243–0.896) | 0.001 | |||
| TR severity | 0.751 (0.373–1.129) | <0.001 | |||
| 4Ch diameter (cm) | |||||
| RAESV (mL) | 0.007 (0.004–0.011) | <0.001 | 0.007 (0.004–0.011) | <0.001 | |
| RVEDV (mL) | 0.005 (0.002–0.008) | 0.001 | |||
| PH severity | 0.227 (0.116–0.339) | <0.001 | |||
| TR severity | 0.199 (0.058–0.340) | 0.007 | |||
| Coaptation point height (mm) | |||||
| RAESV (mL) | 0.041 (0.021–0.061) | <0.001 | |||
| RVEDV (mL) | 0.033 (0.014–0.052) | 0.001 | |||
| PH severity | 1.615 (1.013–2.218) | <0.001 | 1.691 (1.016–2.366) | <0.001 | |
| TR severity | 1.357 (0.510–2.204) | 0.002 | |||
| MTH (mm) | |||||
| RAESV (mL) | 0.047 (0.031–0.062) | <0.001 | |||
| RVEDV (mL) | 0.040 (0.026–0.054) | <0.001 | 0.027 (0.014–0.040) | <0.001 | |
| PH severity | 1.653 (1.174–2.131) | <0.001 | 1.188 (0.683–1.694) | <0.001 | |
| TR severity | 1.882 (1.264–2.500) | <0.001 | |||
| Tenting volume (mL) | |||||
| RAESV (mL) | 0.029 (0.019–0.039) | <0.001 | |||
| RVEDV (mL) | 0.025 (0.016–0.034) | <0.001 | 0.020 (0.011–0.029) | <0.001 | |
| PH severity | 0.814 (0.459–1.168) | <0.001 | |||
| TR severity | 1.067 (0.649–1.486) | <0.001 | 0.642 (0.212–1.073) | 0.004 | |
PH, pulmonary hypertension; TR, tricuspid regurgitation; 4DE, 4-dimensional echocardiography; TV, tricuspid valve; CI, confidence interval; 4Ch diameter, 4-chamber diameter; RAESV, right atrial end-systolic volume; RVEDV, right ventricular end-diastolic volume; MTH, maximal tenting height.