Table 2.
FRI* parameters (average ± SD) before and after using the mHFCWO system (n = 8 in all cases)
| Pretherapy | Posttherapy | P | |
|---|---|---|---|
| siVaw, mL/L | 9.55 ± 9.96 | 8.74 ± 9.70 | <.001 |
| iVaw, mL | |||
| Central | 29.76 ± 8.39 | 28.63 ± 8.06 | .066 |
| Distal | 49.44 ± 50.12 | 44.52 ± 49.64 | .028 |
| Total | 79.20 ± 55.05 | 73.15 ± 53.69 | .026 |
| siRaw (KPA*S) | 0.10 ± 0.16 | 0.16 ± 0.23 | <.001 |
| iRaw (KPA*S/L) | |||
| Central | 0.01 ± 0.01 | 0.01 ± 0.01 | .637 |
| Distal | 0.01 ± 0.01 | 0.02 ± 0.01 | .010 |
| Total | 0.02 ± 0.02 | 0.03 ± 0.02 | .008 |
| iVlobe, L | 1.21 ± 0.66 | 1.17 ± 0.65 | .009 |
Abbreviations: FRI, functional respiratory imaging; HFCWO, high‐frequency chest wall oscillation; SD, standard deviation; TLC, total lung capacity.
*
Assessed at TLC; iVaw, airway volume; iRaw, airway resistance; iVlobe, lobe volume.