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. Author manuscript; available in PMC: 2010 Feb 17.
Published in final edited form as: Liver Transpl. 2008 Sep;14(9):1357–1365. doi: 10.1002/lt.21545

TABLE 4.

Pulmonary Function Testing and Arterial Blood Gas Results

Variable n COPD No COPD P Value
Pulmonary function testing
 Forced vital capacity, % predicted 373 85 ± 19 85 ± 16 0.71
 Forced expiratory volume in 1 second, % predicted 373 69 ± 19 86 ± 16 <0.0001
 Forced expiratory volume in 1 second/forced vital capacity 373 62 ± 8 79 ± 5 <0.0001
 DLCOcorr, % predicted 355 55 ± 13 60 ± 17 0.02
Arterial blood gas
 pH 333 7.44 ± 0.03 7.44 ± 0.04 0.79
 pCO2, mm Hg 333 34 ± 5 35 ± 5 0.69
 pO2, mm Hg 333 81 ± 12 85 ± 16 0.11
 Oxygen saturation, % 326 94 ± 3 95 ± 4 0.72
 Alveolar-arterial oxygen gradient, mm Hg 333 24 (13–31) 15 (7–26) 0.003

NOTE: Data are shown as mean ± standard deviation, median (interquartile range), or n (%).

Abbreviations: COPD, chronic obstructive pulmonary disease; DLCOcorr, diffusing capacity for carbon monoxide corrected for hemoglobin; pCO2, partial pressure of carbon dioxide; pO2, partial pressure of oxygen.