Table 1 Bronchiolitis obliterans syndrome (BOS) classification
From: A review of bronchiolitis obliterans syndrome and therapeutic strategies
BOS Stage | Classification |
|---|---|
0 | FEV1 > 90% of baseline & FEF25-75% > 75% of baseline |
0-p* | FEV1 81-90% of baseline &/or FEF25-75% ≤ 75% of baseline |
1 | FEV1 66-80% of baseline |
2 | FEV1 51-65% of baseline |
3 | FEV1 ≤ 50% of baseline |