Table 1.

Aerosol Performance Characteristics of eFlow Closed System Nebulizers with Glycopyrrolate (N = 15, Mean ± Standard Deviation)

Glycopyrrolate strength	Nebulization time (minutes)	MMAD (μm)	GSD	FPD (μg)	FPF (%)	NGI recovery (% nominal dose)
25 μg/mL	1.88 ± 0.23	3.71 ± 0.26	1.66 ± 0.06	15.20 ± 1.26	72.28 ± 5.57	95.61 ± 1.90
50 μg/mL	1.92 ± 0.14	3.74 ± 0.20	1.65 ± 0.04	30.44 ± 1.51	71.65 ± 4.34	94.94 ± 1.75

CS, Closed System; FPD, fine particle dose; FPF, fine particle fraction; GSD, geometric standard deviation; MMAD, mass median aerodynamic diameter; NGI, Next Generation Impactor.