Table 1. Major difference in etiology, hemodynamics, echo findings, and effusion before and after therapy.
| Measurements | Absent | Present |
|---|---|---|
| Patients, n | 41 | 19 |
| Idiopathic PAH | 25 | 12 |
| CTD PAH | 10 | 5 |
| CHD PAH | 6 | 2 |
| Log NT-proBNP | 3.1 | 3.5 |
| 6MWD, feet | 350 | 300 |
| RA | 12 | 18 |
| Mean PA, mmHg | 55.0 | 60.0 |
| PCWP, mmHg | 9 | 12 |
| PVR, Wood units | 2 | 4 |
| CI, L/min/m2 | 2.3 | 2.0 |
| RA size normal-mild enlargement | 30 | 8 |
| RA size moderate enlargement | 10 | 10 |
| RA size severe enlargement | 1 | 1 |
| LA size normal-mild enlargement | 35 | 15 |
| LA size moderate enlargement | 5 | 3 |
| LA size severe enlargement | 1 | 1 |
| RV size normal-mild enlargement | 25 | 10 |
| RV size moderate enlargement | 15 | 7 |
| RV size severe enlargement | 1 | 2 |
| RV function normal-mild dysfunction | 30 | 10 |
| RV function moderate dysfunction | 10 | 5 |
| RV function severe dysfunction | 1 | 4 |
| TR severity none-mild | 35 | 5 |
| TR severity moderate | 5 | 10 |
| TR severity severe | 1 | 4 |
| IVC size normal | 30 | 7 |
| IVC size dilated | 10 | 9 |
| IVC reduced collapsibility | 1 | 3 |
PAH: pulmonary arterial hypertension; CTD: connective tissue disease; CHD: congenital heart disease; NT-proBNP: N-terminal prohormone of brain natriuretic peptide; 6MWD: six minute walk distance; RA: right atrium; PA: pulmonary artery pressure; PCWP: pulmonary capillary wedge pressure; PVR: pulmonary vascular resistance; CI: cardiac index; LA: left atrium; RV: right ventricle; TR: tricuspid regurgitation; IVC: inferior vena cava.