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. Author manuscript; available in PMC: 2020 May 27.
Published in final edited form as: Int J Pharm. 2018 May 5;546(1-2):1–9. doi: 10.1016/j.ijpharm.2018.05.011

Table 2:

Optimization of Spacer using the best case 0.6mm_v2 LV-DPI. Mean aerosol characteristics with standard deviations (SD) shown in parenthesis [n=3].

Description Spacer 1 Spacer 2
Capsule (%) 10.7 (4.9) 7.6 (0.2)
LV-DPI (%) 2.2 (1.3) 1.2 (0.1)
LV-DPI ED (%) 87.1 (5.9) 91.2 (0.2)
Spacer (%) 12.2 (1.3) 9.0 (1.8)*
Spacer ED (%) 74.8 (5.8) 82.2 (1.6)*
FPF<5μm/ED (%) 89.4 (3.9) 86.5 (3.1)
FPF<1μm/ED (%) 12.2 (1.1) 13.0 (0.7)
MMAD (μm) 2.28 (0.18) 2.31 (0.11)
*

p <0.05 significant difference compared to Spacer 1 (t-test).