Table 1. Background Characteristics of the Study Participantsa.
| PH (n = 38) | Non-PH (n = 22) | P Value | |
|---|---|---|---|
| Gender | 0.599 | ||
| Male | 10 | 8 | |
| Female | 28 | 14 | |
| Age, y | 46 ± 13.3 | 40 ± 16.1 | 0.120 |
| BSA, m 2 | 1.7 ± 0.17 | 1.7 ± 0.16 | 0.837 |
| HR, beat/min | 76.1 ± 9.4 | 57.6 ± 9.2 | 0.001 |
| Diagnosis | < 0.001 | ||
| VHD | 31 (82) | 8 (36) | |
| CAD | 7 (18) | 14 (64) | |
| IVRT, ms | 0.001 | ||
| Ordinary | 73.7 ± 11.7 | 59.3 ± 11.4 | |
| Corrected | 83.0 ± 12 | 57.4 ± 9 | |
| RV MPI | 0.56 ± 0.1 | 0.4 ± 0.1 | 0.001 |
| RV Size, cm | 3.4 ± 0.66 | 3.5 ± 0.93 | 0.508 |
| TTP, ms | 127.2 ± 24.3 | 146.7 ± 30.2 | 0.008 |
| Sm, cm/sec | 10.4 ± 2.47 | 12.4 ± 2.04 | 0.002 |
| Em, cm/sec | 7.5 ± 3.30 | 6.8 ± 4.28 | 0.552 |
| SVTI, cm | 17 ± 5.80 | 22.4 ± 4.87 | < 0.001 |
| TRG, mmHg | 44.3 ± 18.18 | 28.4 ± 8.13 | < 0.001 |
Abbreviations: BSA, body surface area; HR, heart rate; VHD, valvular heart disease; CAD, coronary artery disease; IVRT, isovolumetric relaxation time; RV, right ventricle; MPI, myocardial performance index; TTP, time to peak; VTI, velocity-time integral; TRG, tricuspid regurgitation gradient; Sm, peak systolic velocity; Em, early diastolic velocity; PH, pulmonary hypertension (mean PAP ≥ 25 mmHg in right heart catheterization).
aData presented as mean ± standard deviation for interval and count (%) for categorical variables.