Table 2.
Results of spirometry, lung volumes, and gas exchange parameters
| Parameter | Women | Men |
|---|---|---|
| Spirometry | n = 102 | n = 34 |
| FVC (L) | 2.97 ± 0.69 (1.51–4.75) | 3.67 ± 0.79 (1.79–5.08)* |
| FVC (% predicted) | 83 ± 17 (42–119) | 71 ± 15 (33–96)* |
| FEV1 (L) | 2.32 ± 0.63 (0.77–3.98) | 2.73 ± 0.73 (1.27–4.43)* |
| FEV1 (% predicted) | 79 ± 19 (29–126) | 65 ± 16 (30–99)* |
| FEV1/FVC | 0.77 ± 0.08 (0.50–1.11) | 0.73 ± 0.08 (0.51–0.99)* |
| Lung volumes | n = 83 | n = 28 |
| TLC (L) | 4.54 ± 0.73 (2.50–6.00) | 5.88 ± 1.19 (3.73–8.03)* |
| TLC (% predicted) | 87 ± 14 (48–123) | 82 ± 16 (49–116) |
| RV (L) | 1.58 ± 0.60 (0.37–4.03) | 2.16 ± 0.80 (0.79–3.56)* |
| RV (% predicted) | 85 ± 27 (26–143) | 107 ± 37 (47–179)* |
| ERV (L) | 0.41 ± 0.27 (0.06–1.33) | 0.38 ± 0.19 (0.15–0.90) |
| ERV (% predicted) | 35 ± 24 (5–107) | 22 ± 12 (9–56)* |
| IC (L) | 2.52 ± 0.55 (1.3–3.91) | 3.25 ± 0.71 (1.55–4.36)* |
| IC (% predicted) | 109 ± 26 (65–247) | 92 ± 23 (44–125)* |
| FRC (L) | 2.09 ± 0.62 (1.02–4.61) | 2.56 ± 0.72 (1.04–3.89)* |
| FRC (% predicted) | 74 ± 25 (34–171) | 74 ± 18 (32–119) |
| Diffusing capacity | n = 35 | n = 16 |
| DLCO (mL/mm Hg/min) | 22.2 ± 5.1 (8.5–30.9) | 30.1 ± 6.3 (18.6–40.8)* |
| DLCO (% predicted) | 81 ± 17 (35–123) | 79 ± 19 (48–121) |
| Arterial blood gases | n = 89 | n = 28 |
| pH | 7.41 ± 0.03 (7.35–7.49) | 7.41 ± 0.02 (7.38–7.46) |
| PaCO2 (mm Hg) | 40.9 ± 5.8 (28.0–70.2) | 46.2 ± 5.5 (36.0–90.0)* |
| PaO2 (mm Hg) | 83.0 ± 11.7 (40.2–110.0) | 69.0 ± 13.2 (36.0–90.0)* |
| HCO3 (mEq) | 25.8 ± 3.5 (17.0–42.5) | 28.1 ± 2.7 (24.4–34.0)* |
FVC = forced vital capacity; FEV1 = forced expiratory volume in 1 s; TLC = total lung capacity; RV = reserve volume; ERV = expiratory reserve volume; IC = inspiratory capacity; FRC = functional reserve capacity; DLCO = arterial pressure of diffusing capacity for carbon monoxide; PaCO2 = carbon dioxide; PaO2 = arterial pressure of oxygen; HCO3 = bicarbonate.
*
P < .05 for difference comparing genders.