Table 3.
Comparison of TTE PH parameters in those with and without PH
| TTE parameters | PH (N = 236) | No PH (N = 74) | Statistical significance |
|---|---|---|---|
| Peak TRV (m/s) (N = 257) | 3.6 ± 0.84 | 2.56 ± 0.4 | P < 0.001 |
| RV/LV BASAL diameter ratio (N = 249) | 1.01 ± 0.31 | 0.78 ± 0.21 | P < 0.001 |
| End systolic eccentricity index (N = 274) | 1.28 ± 0.36 | 0.99 ± 0.18 | P < 0.001 |
| End diastolic eccentricity index (N = 267) | 1.12 ± 0.28 | 0.90 ± 0.17 | P < 0.001 |
| RVOT acceleration time (ms) (N = 290) | 81 ± 25 | 109 ± 31 | P < 0.001 |
| MPA diameter (mm) (N = 125) | 24 ± 6 | 20 ± 5 | P < 0.01 |
| PRVBD (m/s) (N = 92) | 2.34 ± 0.41 | 1.5 ± 0.36 | P < 0.001 |
| Right atrial area (cm2) (N = 310) | 20.9 ± 8.4 | 15.4 ± 5.8 | P < 0.001 |
| Frequency with IVC diameter > 21 mm and reduced collapsibility (N = 273) | N = 41 (17%) | N = 2 (3%) | P < 0.001 |
| RVFWLS (-%) (N = 155) | − 17.4 ± 6.8 | − 24.1 ± 5.1 | P < 0.001 |
| RVFAC (%) (N = 81) | 27.2 ± 12 | 39.1 ± 9.7 | P < 0.001 |
| Indexed right atrial area (cm2/m2) (N = 268) | 11.16 ± 4.6 | 8 ± 3.4 | P < 0.001 |
| RV TDI E’ (N = 228) | 9.02 ± 3.45 | 10.63 ± 3.19 | P < 0.01 |
| RV TDI E’/A’ ratio (N = 219) | 0.71 ± 0.52 | 0.82 ± 0.36 | P < 0.01 |
| RV TDI IVRT (N = 164) | 98.1 ± 39.2 | 76.5 ± 26.2 | P < 0.001 |
TTE transthoracic echocardiography, TRV tricuspid regurgitant velocity, RV right ventricle, LV left ventricle, PRVBD pulmonary regurgitant velocity at begging of diastole, MPA main pulmonary artery, RVOT right ventricular outflow tract, MSN mid-systolic notching, IVC inferior vena cava, RVFWLS right ventricular free wall longitudinal strain, TDI tissue doppler imaging, IVRT isovolumetric relaxation time, RVFAC right ventricular fractional area of change