Table 2.
Comparison of parameters of right atrium (RA) function and other echocardiographic parameters for healthy control subjects versus patients with pulmonary arterial hypertension (PAH)
| Parameter | Control subjects (n = 71) |
PAH (n = 39) |
P |
|---|---|---|---|
| Total RAEF, % | 56.2 ± 10.0 | 24.4 ± 4.4 | <0.001 |
| Passive RAEF, % | 27.6 ± 13.5 | 8.5 ± 6.9 | <0.001 |
| Active RAEF, % | 39.7 ± 9.7 | 17.6 ± 13.9 | <0.001 |
| RVSP, mmHg | 19.1 ± 9.1 | 82.0 ± 20.1 | <0.001 |
| RA volume index, mL/m2 | 28.0 ± 8.0 | 54.0 ± 24.9 | <0.001 |
| RV diameter, cm | 3.2 ± 0.2 | 5.3 ± 0.8 | <0.001 |
| TAPSE, cm | 2.3 ± 0.3 | 1.5 ± 0.5 | 0.001 |
| LVEF, % | 62 ± 2 | 58 ± 4 | 0.5 |
Note
LVEF: left ventricular ejection fraction; RAEF: right atrial emptying fraction; RV: right ventricle; RVSP: right ventricular systolic pressure; TAPSE: tricuspid annular plane systolic excursion.