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Table 2 Pulmonary function tests of patients with and without emphysema.

From: Hepatocyte and keratinocyte growth factors and their receptors in human lung emphysema

  Emphysema (E) Non-emphysema Smokers (S) Non-emphysema Non-Smokers (NS) Between groups differences
n 17 8 10  
FEV1 % predicted value (% pred) 41.7 ± 26.6 *,† 71 ± 21.3 82 ± 11.1 p < 0.001
FEV1/FVC 48.7 ± 13.9 *,† 67.6 ± 14.8† 86.9 ± 11.6 p < 0.001
RV (%pred) 211.6 ± 69.4 *,† 123 ± 19.7 88 ± 23.9 p < 0.001
TLC (%pred) 121.5 ± 17.8 *,† 100 ± 10.4 † 83 ± 13.5 p < 0.001
PaO2 (mmHg) 69.7 ± 10.1 *,† 81 ± 15.8 85.2 ± 7.6 p < 0.005
PaCO2 (mmHg) 41.3 ± 5 38.7 ± 7.7 41.8 ± 2.6 ns
  1. *: vs S, p < 0.01; †: vs NS, p < 0.01; as assessed by Mann-Whitney U-test. ns: non significant
  2. PaO2: arterial oxygen pressure, PaCO2: arterial carbon dioxide pressure, FEV1: forced expiratory volume in one second, RV: residual volume, FVC: forced vital capacity, TLC: total lung capacity.