The Science Journal of the American Association for Respiratory Care

1998 OPEN FORUM Abstracts

PERFORMANCE CHARACTERISTICS OF VARIOUS PNEUMATIC JET NEBULIZERS.

Kimberly Francis, B.S., Virginia Commonwealth University, D. Todd Loffert, MHS., Johns Hopkins University.

The efficiency of eleven jet nebulizers was analyzed using the Laser Mastersizer X. The output (ml/min), percent respirable range (1-5 µm), and the respirable rate (ml/min in 1-5 µm) were the parameters recorded. This study shows the wide range of performance characteristics of jet nebulizers.

The respirable range was measured using the Laser Mastersizer X. Each nebulizer was filled with 3 ml of 0.9% saline solution and was ran for 1.63 minutes with a Pari Proneb Turbo compressor. Then the nebulizers were filled with 5 ml of 0.9% saline solution and were nebulized with the same Pari Proneb Turbo compressor unit for 4 minutes. An air flow of 20 l/min was ran through the nebulizers to simulate adult inspiratory flow. Each nebulizer was weighed before and after nebulization for gravimetric analysis of medication output (ml/min). The respirable rate in the 1-5 µm range was then calculated by multiplying the percent respirable range with the output of each nebulizer. The following table summarizes the Results:

% Respirable Output Respirable rate

range (ml/min) (ml/min 1-5µm)

Meridian 59.69 .13 0.07

Whisper Jet 44.65 .17 0.07

Uniheart 49.20 .11 0.05

Acorn 45.58 .16 0.07

Cirrus 43.48 .18 0.08

Beta2 32.13 .20 0.06

A&M 82.63 .15 0.12

Ultramist 36.59 .54 0.19

Aerobid 31.05 .63 0.19

Miniheart 60.41 .10 0.06

Pari LC Plus 60.00 .45 0.27

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

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