Table 1.
Aerosol Deposition Comparison
| Device | Right lung (%) | Left lung (%) | Head (%) | Total extra-pulmonary (%) | Waste (%) | C/Pa |
|---|---|---|---|---|---|---|
| tPAD | 20 (4) | 19 (5) | 6 (6) | 13 (13) | 48 (13) | 1.12 (0.14) |
| LC Star | 18 (5) | 18 (4) | 1 (1) | 8 (5) | 56 (7) | 1.36 (0.24) |
The mean (SD) values for regional ex-device deposition percentage and C/P ratio after inhalation of radiolabeled 7% NaCl via the tPAD and PARI LC Star. “Head” designation includes all the deposition above the chin (nose and oropharynx). Deposition onto the nasal containment mask and cannula (tPAD), and the exhaled fraction collected on the exhaust filter are included in the “waste” fraction.
a
p = 0.028 comparing the C/P ratio between the two devices.
C/P, central to peripheral; tPAD, trans-nasal pulmonary aerosol delivery; SD, standard deviation.