Table 2.
Results of the fractionated exhaled breath condensate sampling parameters
| Asthmatic patients | Controls | |||||
|---|---|---|---|---|---|---|
| Total gas sampling volume (L) | 200 | 300 | p | 200 | 300 | p |
| n | 18 | 14 | 10 | 10 | ||
| Sampling time (min) | 8.6 (6.9-11.7) | 12.8 (9.3-16.1) | 0.01 | 9.2 (7.9-10.6) | 9.7 (8.1-11.1) | ns |
| Peak flow (L/s) | 2.2 (1.5-2.7) | 2.0 (1.4-2.2) | ns | 2.1 (1.8-2.6) | 2.0 (1.5-2.4) | ns |
|
Condensate volume airway fraction (μL) |
410 (293-625) | 825 (450-1050) | 0.02 | 400 (303-540) | 600 (488-763) | 0.007 |
|
Condensate volume alveolar fraction (μL) |
1275 (988-1650) | 2000 (1400-2400) | 0.07 | 1200 (925-1838) | 2150 (1670-2400) | 0.009 |
| H2O2 concentration fraction 1 (nmol/L) | 290 (95-515) | 310 (160-640) | ns | 250 (95-545) | 320 (155-615) | ns |
| H2O2 concentration fraction 2 (nmol/L) | 270 (155-475) | 190 (115-405) | ns | 140 (120-290) | 250 (135-450) | ns |
Values as medians (IQR) or numbers, as appropriate; ns: not significant