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Table 1 Anthropometric and pulmonary function data of 73 SSc patients classified by V’E/P0.1 ≥ 8 l/min/cmH 2 O[10]

From: Increased respiratory drive relates to severity of dyspnea in systemic sclerosis

 

V’E/P0.1 < 8 l/min/cmH2O N = 28

V’E/P0.1 ≥ 8 l/min/cmH2O N = 45

P value*

Age (yrs)

54.4 (11.8)

50.9 (14.4)

0.25

Female sex (%)

26 (93)

37 (82)

0.11

Height (cm)

164 (7.2)

171 (8.7)

0.002

Weight (kg)

67.1 (15.3)

69.8 (12.8)

0.43

BMI (cm/kg2)

24.8 (5.4)

23.9 (3.7)

0.48

lcSSc subtype (%)

10 (36)

34 (76)

0.02

PaO2 (kPa)

10.4 (0.36)

10.6 (0.29)

0.58

PaCO2 (kPa)

5.31 (0.41)

5.18 (0.43)

0.25

FVC (% pred)

92.1 (19.9)

111.1 (19.7)

0.001

DLCOc SB (% pred)

57.7 (15.8)

70.7 (15.1)

0.001

TLC-He (% pred)

81.5 (16.6)

95.4 (13.5)

<0.001

FRC/TLC (%)

53 (17)

56 (7)

0.23

  1. *P value expressed for student T-test.
  2. PaO 2 (partial arterial oxygen pressure, kPa).
  3. PaCO 2 (partial arterial carbon dioxide pressure, kPa).
  4. FVC (forced vital capacity, % pred).
  5. DLCOc SB (diffusion capacity for carbon monoxide single breath, % pred).
  6. TLC-He (total lung capacity, helium-dilution, % pred).
  7. FRC/TLC (ratio of functional residual capacity and TLC, %).