Inspiratory Flows and Volumes in Subjects with Non-CF Bronchiectasis Using a New Dry Powder Inhaler Device
Mark R. Elkins1, Sandra D. Anderson1, Clare P. Perry1, Evangelia Daviskas1, Brett Charlton*, 2
Identifiers and Pagination:Year: 2014
First Page: 8
Last Page: 13
Publisher ID: TORMJ-8-8
Article History:Received Date: 18/11/2013
Revision Received Date: 26/11/2013
Acceptance Date: 26/11/2013
Electronic publication date: 24/1/2014
Collection year: 2014
open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
Drug inhalation via a dry-powder inhaler (DPI) is a convenient, time efficient alternative to nebulizers in the treatment of cystic fibrosis (CF) or non-CF bronchiectasis. Efficient drug administration via DPIs depends on the device resistance and adequate (≥45L/min) inspiratory flows and volumes generated by individuals. Drypowder mannitol is delivered using a RS01 breath-actuated device developed by Plastiape, for Pharmaxis. The study aim was to determine in vivo if non-CF bronchiectasis patients’ inspiratory flows and volumes are adequate to use the RS01 DPI device.
Materials and Methodology:
An open, non-interventional study; enrolled 17 subjects with non-CF bronchiectasis, 18 to 80 years, with baseline FEV1 ≥1.0L and ≥50‰ predicted. Inspiratory flows and volumes were measured when subjects inhaled in a controlled manner through the RS01 device in series with a spirometer.
The mean inspiratory volume (IV) of non-CF bronchiectasis subjects was 2.08 ± 0.5L and achieved a mean PIF of 78.6 ± 11.2L/min with the inhaler device.
Use of the RS01 DPI device allowed adequate inspiratory flow and volume for dispersion of dry-powder mannitol in non-CF bronchiectasis patients.