The Science Journal of the American Association for Respiratory Care

1998 OPEN FORUM Abstracts

COMPARISON OF THE LC STAR AND AEROTECH II NEBULIZERS, USING THE PRONEB TURBO AND A 0_{2} TANK FOR COMPRESSOR FLOW.

D. Todd Loffert, M.H.S., Kim Francis BS. PARI Respiratory Equipment, 13800 Hull Street Road, Midiothian, VA. 23112.

Jet nebulizers differ in their output and characteristics of their aerosol profile because of differences in jet orifice size, internal surface area, shape and type of auxiliary vents, durability, and compressor source. The intent of this study is to compare the LC STAR and Aerotech II nebulizers using the Proneb Turbo and a 0_{2} tank for compressor flow. We believe that there will be a significant performance difference in ml/min., percentage of particles in the respirable range( < 5µm), and respirable particle delivery rate. Both nebulizers will be run with both of the compressor sources.

Two different nebulizer systems were analyzed with two different compressor systems for aerosol characterization. Aerosol characterization includes: total output (ml/min.), percentage of particles < 5µm, and Respirable Rate. Output was determined gravitmetrically and particle size was ascertained by laser light scattering (Malvem MasterSizer X). The compressor/nebulizer combinations studied were: PARI Proneb turbo compressor w/LC STAR, O2 tank w/LC STAR@ 12LPM, Proneb turbo compressor w/Aerotech II, O2 TANK w/Aerotech II@ 12LPM. The nebulizers were operated with an additional continuous flow of 20 Liters per minute (to simulate average adult inhalation).

RESULTS

PARI PRONEB TURBO COMPRESSOR W/LC STAR

-Ml/Min average = 0.47 ml/min.

- < 5µm average = 77.45 %.

-To combine the previous variables RPDR was calculated, = Ml/Min multiplied by < 5µm. RPDR average = 0.36 ml/min of 1-5 micron particles.

O2 TANK COMPRESSOR W/LC STAR@ 12LPM

-Ml/Min average = 0.62 ml/min.

- < 5µm average = 80 %.

-To combine the previous variables RPDR was calculated, = Ml/Min multiplied by < 5µm. RPDR average = 0.50 ml/min of 1-5 micron particles.

PARI PRONEB TURBO COMPRESSOR W/AEROTECH II

-Ml/Min average = 0.20 ml/min.

- < 5µm average = 66.50 %.

-To combine the previous variables RPDR was calculated, = Ml/Min multiplied by < 5µm. RPDR average = 0.13 ml/min of 1-5 micron particles.

02 TANK COMPRESSOR W/AEROTECH II@ 12LPM

-Ml/Min average = 0.39 ml/min.

- < 5µm average = 77.46 %.

-To combine the previous variables RPDR was calculated, = Ml/Min multiplied by < 5µm. RPDR average = 0.30 ml/min of 1-5 micron particles.

The 44th International Respiratory Congress Abstracts-On-Disk®, November 7 - 10, 1998, Atlanta, Georgia.

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