Table 2.
Comparison of FOT values between non-IPF ILDs and IPFs.
| All patients N = 160 |
Stable non-IPF ILDs n = 139 |
IPF n = 21 |
|
|---|---|---|---|
|
Rrs5 Inspiratory (cmH2O/(L/sec)) |
0.38 (-0.35–1.18) | 0.33 (-0.28–1.25) | 0.41 (-0.64–1.15) |
| Rrs5 Inspiratory (%pred) | 111 (91–139) | 109 (93–142) | 112 (84–137) |
|
Rrs5 Expiratory (cmH2O/(L/sec)) |
1.01 (0.08–1.75) | 0.98 (0.2–1.75) | 0.84 (-0.34–1.8) |
| Rrs5 Expiratory (%pred) | 132 (104–163) | 131 (105–161) | 126 (93–166) |
|
Rrs5 Whole breath (cmH2O/(L/sec)) |
0.71 (0.05–1.57) | 0.7 (0.17–1.58) | 0.49 (-0.4–1.57) |
| Rrs5 Whole breath (%pred) | 122 (100–154) | 122 (105–155) | 115 (89–154) |
| Xrs5 Inspiratory (cmH2O/(L/sec)) | -0.01 (-1.2–0.8) | 0.31 (-0.61–0.99) | -0.39 (-1.42–0.53)* |
| Xrs5 Inspiratory (%pred) | 100 (73–141) | 91 (67–121) | 115 (82–149)* |
| Xrs5 Expiratory (cmH2O/(L/sec)) | -0.1 (-1.96–1.01) | 0.24 (-2.17–1.14) | -0.23 (-1.69–0.97) |
| Xrs5 Expiratory (%pred) | 101 (66–179) | 90 (61–182) | 106 (67–179) |
| Xrs5 Whole breath(cmH2O/(L/sec)) | -0.08 (-1.89–0.8) | 0.13 (-1.4–1.07) | -0.52 (-2.12–0.78) |
| Xrs5 Whole breath (%pred) | 103 (71–170) | 96 (63–151) | 116 (74–170) |
Continuous variables are expressed as median (interquartile ranges).
*p-value < 0,05 comparing stable ILDs to PPFs.
FOT forced oscillation technique, ILD interstitial lung disease, PPF progressive pulmonary fibrosis, Rrs5 respiratory system resistance at 5Hz, Xrs5 respiratory system reactance at 5Hz, cmH2O/(L/sec) centimeter of water per liter per second