Table 2.
Test group 2 particle gradient compared to background after a single actuation of BDP-HFA PMDI: decrease in submicrometric and increase in larger particle number in the presence of ETS.
| Particle diameter | 0.3–1.0 μm | 1.1–2.0 μm | 2.1–3.0 μm | 3.1–4.0 μm | 4.1–5.0 μm | > 5.1 μm |
| Ambient Air | ||||||
| Test # 7 | 23419 ± 173 | 908 ± 18 | 100 ± 5 | 9 ± 5 | 2 ± 1 | 0 ± 1 |
| Test # 8 | 25245 ± 210 | 906 ± 20 | 80 ± 5 | 7 ± 2 | 2 ± 2 | 1 ± 1 |
| Test # 9 | 24617 ± 280 | 903 ± 31 | 80 ± 6 | 9 ± 4 | 2 ± 2 | 1 ± 1 |
| Test # 10 | 23092 ± 179 | 858 ± 19 | 98 ± 5 | 13 ± 4 | 2 ± 2 | 2 ± 2 |
| Pooled data of 4 tests | 24093 ± 211 | 894 ± 22 | 89 ± 5 | 10 ± 4 | 2 ± 2 | 1 ± 1 |
| ETS | ||||||
| Test # 11 | -2633 ± 196 | 1574 ± 41 | 140 ± 9 | 11 ± 3 | 2 ± 2 | 0 ± 1 |
| Test # 12 | -2623 ± 206 | 1505 ± 50 | 136 ± 10 | 10 ± 3 | 1 ± 1 | 1 ± 1 |
| Test # 13 | -2180 ± 161 | 1604 ± 44 | 127 ± 8 | 16 ± 5 | 3 ± 2 | 3 ± 2 |
| Test# 14 | -2212 ± 189 | 1751 ± 49 | 151 ± 8 | 7 ± 4 | 2 ± 2 | 1 ± 1 |
| Pooled data of 4 tests | -2412 ± 188* | 1609 ± 46* | 139 ± 9* | 11 ± 4 | 2 ± 2 | 1 ± 2 |
ETS = Environmental Tobacco Smoke; BPD-HFA pMDI = beclometasone-hydrofluoroalkane pressurized metered dose inhaler; μm = micrometers.
Values are number of particles/liter (mean ± SD).
*P < 0.001 as compared to pooled data in ambient air for the same particle diameter