Table 2.
PNIF values (in L/min) for challenges with grass pollen, birch pollen and house dust mite (HDM)
| Pollen | Concentration | PNIF baseline (±SD) | PNIF 30 min (±SD) | PNIF 60 min (±SD) | PNIF 90 min (±SD) | PNIF 120 min (±SD) |
|---|---|---|---|---|---|---|
| Grass | Placebo | 123.4 (±55.4) | 106.8 (±40.4) | 109.3 (±44.9) | 114.3 (±51.1) | 115.2 (±56.3) |
| 4000 grains/m3 | 130.7 (±54.8) | 102.7 (±50.9) | 99.3 (±52.7) | 95.7 (±52.5) | 95.6 (±50.7) | |
| 8000 grains/m3 | 135.5 (±52.7) | 98.0 (±50.9) | 84.1 (±46.3) | 82.5 (±47.6) | 96.1 (±48.3) | |
| Birch | Placebo | 132.5 (±63.1) | 118.6 (±58.8) | 116.4 (±56.9) | 112.7 (±51.2) | 117.5 (±56.9) |
| 4000 grains/m3 | 143.6 (±37.5) | 126.1 (±42.4) | 118.9 (±41.7) | 117.9 (±37.2) | 120.2 (±44.2) | |
| 8000 grains/m3 | 140.8 (±43.3) | 122.7 (±44.7) | 115.6 (±45.6) | 119.9 (±40.5) | 118.9 (±39.5) | |
| 16,000 grains/m3 | 143.6 (±47.2) | 118.6 (±47.8) | 110.0 (±43.6) | 108.6 (±53.5) | 114.6 (±50.3) | |
| HDM | Placebo | 136.9 (±46.4) | 121.9 (±50.1) | 106.1 (±52.0) | 104.4 (±51.3) | X |
| 250 µg/m3 | 139.4 (±55.1) | 95.2 (±38.6) | 80.0 (±38.0) | 81.5 (±40.2) | X |
PNIF peak nasal inspiratory flow, SD standard deviation