Table 5.
Summary of PH Echocardiographic parameters in those with low TTE probability and with PH or no PH (N = 78)
| Echocardiographic parameter | No Pulmonary Hypertension (N = 51) | Pulmonary hypertension (N = 28) | Statistical significance |
|---|---|---|---|
| Average Peak TRV (m/s) | 2.34 ± 0.31 | 2.36 ± 0.43 | NS |
| Average RV/LV basal diameter ratio | 0.72 ± 0.12 | 0.77 ± 0.14 | NS |
| End-Diastolic Eccentricity index | 0.91 ± 0.12 | 0.91 ± 0.13 | NS |
| End-Systolic Eccentricity index | 0.97 ± 0.12 | 1.0 ± 0.17 | NS |
| Early Peak Diastolic PRV (m/s) | 1.58 ± 0.31 | 1.7 ± 0.44 | NS |
| Average MPA diameter (mm) | 19.4 ± 4 | 20.6 ± 7.2 | NS |
| RVOT acceleration time (ms) | 114.6 ± 31.6 | 102.6 ± 29.8 | NS |
| Frequency of MSN notching (%) | 6 | 7 | NS |
| Frequency of IVC diameter > 21 mm with < 50% Respiratory collapse | 0 | 4 | NS |
| RAA (cm2) | 14 ± 4 | 14.6 ± 6.5 | NS |
| RVFWLS (–%) | − 23.8 ± 3.9 | − 20.6 ± 4.1 | P < 0.02 |
| RV TDI IVRT (ms) | 71.5 ± 23.9 | 80.3 ± 22 | NS |
| RV TDI E’ | 10.3 ± 3.1 | 10.1 ± 3.7 | NS |
| RV TDI E’:A’ ratio | 0.83 ± 0.38 | 0.8 ± 0.39 | NS |
| RV wall thickness > 5 mm (n = 14) | 0/9 | 3/5 (60) | P < 0.03 |
| RAAI (cm2/m2) | 7.1 ± 2.1 | 7.65 ± 3 | NS |
| RVD-1 | 3.38 ± 0.64 | 3.59 ± 0.63 | NS |
| RVEDAI (cm2/m2) | 9.34 ± 2.1 | 8.41 ± 3.45 | NS |
| RVFAC (%) | 38.6 ± 9.7 | 32.7 ± 11.1 | P = 0.05 |
| TAPSE (cm) | 2.17 ± 0.45 | 2.08 ± 0.4 | NS |
| RV S’ (cm/s) | 14.04 ± 3.28 | 13.08 ± 3.25 | NS |
| Pericardial effusion present (%) | 4 | 8 | NS |
TTE transthoracic echocardiography, PH pulmonary hypertension, TRV tricuspid regurgitant velocity, RV right ventricle, LV left ventricle, PRV pulmonary regurgitant velocity, MPA main pulmonary artery, RVOT right ventricular outflow tract, MSN mid-systolic notching, IVC inferior vena cava, RAA right atrial area, RVFWLS right ventricular free wall longitudinal strain, TDI tissue doppler imaging, IVRT isovolumetric relaxation time, RAAI right atrial area indexed, RVFAC right ventricular fractional area of change, RVEDAi right ventricular end-diastolic area indexed, TAPSE tricuspid annular plane excursion