Table 2 Clinical characteristics, n = 6495

PASP (mm Hg)

40.6 ± 9.7

mPAP (mm Hg)

28.2 ± 6.3

PAWP (mm Hg)

13.5 ± 4.9

CO (L/min)

5.3 ± 1.4

PVR (WU)

3.0 ± 1.8

Pre-capillary PH, n (%)

3891 (59.9)

Severe PH, n (%)

543 (8.4)

FEV1 (% predicted)

21.7

  < 30% predicted, n (%)

2741 (42.2)

  ≥ 30% predicted, n (%)

378 (5.8)

Unknown

3376 (52.0)

FVC (% predicted)

54.0

  < 50% predicted, n (%)

1353 (20.8)

  ≥ 50% predicted, n (%)

1771 (27.3)

Unknown

3371 (51.9)

6MWD (m)

221.2 ± 113.0

Oxygen requirement (L/min)

3.1 ± 2.5

  ≥ 3 L/min, n (%)

1758 (27.1)

  < 3 L/min, n (%)

1345 (20.7)

Unknown

3392 (52.2)

PaCO2 (mm Hg)

50.2 ± 12.5

  ≥ 40 mm Hg, n (%)

2278 (35.1)

  < 40 mm Hg, n (%)

442 (6.8)

Unknown, n (%)

3775 (58.1)

Mechanical Ventilation, n (%)

54 (0.8)

Double Lung Preference Only, n (%)

3391 (52.2)

Creatinine (mg/dL)

0.82 ± 0.33

  ≥ 0.8 mg/dL, n (%)

1735 (26.7)

  < 0.8 mg/dL, n (%)

1395 (21.5)

Unknown, n (%)

3365 (51.8)