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Table 2 Static and dynamic lung volumes

From: Membrane diffusion- and capillary blood volume measurements are not useful as screening tools for pulmonary arterial hypertension in systemic sclerosis: a case control study

  SScPAH+ N = 11 SScPAH- N = 13 Control N = 10
FVC, % pred 97.5 ± 20.8 103.0 ± 22.4 122.1 ± 17.0
FEV1, % pred 83.5 ± 12.1 92.5 ± 20.4 108 ± 12.4
FEV1/VC 69.4 ± 9.8 72.8 ± 7.0 74.2 ± 6.3
TLC, % pred 90.3 ± 17.1 91.4 ± 13.6  
TLCO, % pred 40.7 ± 6.8* 63.3 ± 11.7 93.3 ± 15.0
Dm, mmol·min-1·kPA-1 3.7 ± 1.1* 7.5 ± 2.8 15.1 ± 4.1
Dm,% pred 21.7 ± 5.8* 39.2 ± 12.4 81.3 ± 18.0
Vc, ml 40.2 ± 14.30 45.8 ± 13.7 56.2 ± 16.1
Vc, % pred 59.9 ± 24.6 61.7 ± 17.6 82.8 ± 10.8
Dm%/Vc % 0.41 ± 0.25 0.71 ± 0.37 1.00 ± 0.26
Vc%/Dm % 2.99 ± 1.5* 1.73 ± 0.74 1.06 ± 0.26
  1. Values expressed as mean ± SD. Abbreviations: SScPAH+: systemic sclerosis-associated pulmonary arterial hypertension; SScPAH-: SSc without PAH. FEV1 %: forced expiratory volume, percentage of predicted. TLC: total long capacity. TLCO: transfer factor of the lung for carbon monoxide. Dm: diffusing capacity of the alveolar capillary membrane. Vc: pulmonary capillary volume. * p < 0.05 for comparison of SScPAH+ with SScPAH-; p < 0.05 for comparison of SScPAH+ with control. p < 0.05 for comparison of SScPAH- with control