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Evaluation of two commercial jet nebulisers and three compressors for the nebulisation of antibiotics.
  1. J C Hung,
  2. G Hambleton,
  3. M Super
  1. Royal Manchester Children's Hospital, Pendlebury.


    Nebulised antibiotics have been shown to be beneficial in the treatment of lung infections in cystic fibrosis. Studies on the efficiency of nebuliser systems are constantly required in view of the large number of compressor/drug/nebuliser combinations which are possible and the development of new systems and drugs. Six combinations of three commercially available compressors were compared (PortaNeb 50 (Medic-Aid; 5.4-6.1 l/min), Turboneb (Medix; 8.3-9.1 l/min), and CR 60 (Medic-Aid; 7.3-7.8 l/min)) and two jet nebulisers (Microneb III (Lifecare) and System 22 Acorn (Medic-Aid)) for the nebulisation of colomycin, gentamicin, and ciprofloxacin. Aerosol droplet size, nebulisation time, and aerosol output were determined. Turboneb and CR 60 reduced the nebulisation time and produced higher proportions of 'respirable' (< 5 microns diameter) antibiotic aerosols. The residual volume of the Microneb III was lower than that of the System 22 Acorn. It was found that the Turboneb and CR 60, when coupled with either Microneb III or System 22 Acorn, were suitable for the nebulisation of all three antibiotics. Of the equipment tested, Turboneb coupled with Microneb III was the most efficient combination. Even with this combination, only around 50% of the nominal dose was released as respirable aerosol.

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