Table 2. Distribution of gas exchange indices in sarcoidosis.
| Variable | Normal DLco (n=50) | Decreased DLco (n=80) |
|---|---|---|
| Normal ∆SpO2-6MWT (n=95) | ||
| Normal peak AaDO2 (n=57) | 35 | 22 |
| Increased peak AaDO2 (n=38) | 9 | 29 |
| Increased ∆SpO2-6MWT (n=35) | ||
| Normal peak AaDO2 (n=9) | 4 | 5 |
| Increased peak AaDO2 (n=26) | 2 | 24 |
Data are presented as the number (%) of n=130 patients. 6MWT, 6-minute walk test; ∆SpO2-6MWT, oxygen desaturation during the 6MWT; AaDO2, alveolar-to-arterial oxygen pressure difference; DLco, diffusing capacity of the lung for carbon monoxide.