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Prospective, open-label evaluation of a new albuterol multidose dry powder inhaler with integrated dose counter

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Background:

Albuterol multidose dry powder inhaler (MDPI) with an integrated dose counter allows patients to track the number of remaining doses and to simplify dosing by eliminating the need to coordinate inhalation with actuation associated with metered-dose inhalers.

Objective:

To evaluate the functionality, reliability, and accuracy of the albuterol MDPI integrated dose counter in a real-world clinical setting.

Methods:

This open-label, phase III study enrolled patients ages ≥4 years with asthma or chronic obstructive pulmonary disease. Patients who demonstrated adequate MDPI inhaler technique and ≥90% compliance with dosing and diary completion during a run-in period qualified for treatment with albuterol MDPI with a dose counter (2 inhalations/dose; 90 μg/inhalation) twice daily for up to 50 days. Patient-reported counter readings and patient-reported actuations were recorded in daily diaries and were used to assess dose counter accuracy. An ease-of-use and satisfaction questionnaire was given at the final visit.

Results:

A total of 317 patients were enrolled in the study. The dose-cycle undercount (i.e., actuation occurred, but the counter display did not count down) was 2.05 per 200 actuations. The estimated mean ± standard error absolute value of the total discrepancy size after 200 actuations was 2.07 ± 0.140. Most patients (83%) were somewhat or very satisfied, and >90% were satisfied with ease of holding and/or handling, using and taking, and inhaling a dose from the device. The albuterol MDPI was generally well tolerated.

Conclusion:

The albuterol MDPI dose counter functioned reliably and accurately. Albuterol MDPI was well tolerated, with a high degree of patient satisfaction in a real-world setting. Clinical Trial number: NCT01857323.
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Keywords: Albuterol; asthma; chronic obstructive pulmonary disease; dose counter; dry powder inhalers; ease of use; patient satisfaction; performance characteristics; reliability; reliable

Document Type: Research Article

Affiliations: Allergy and Respiratory Center, Canton, Ohio, and 2Teva Pharmaceuticals, Miami, Florida, USA

Publication date: 01 May 2016

This article was made available online on 29 January 2016 as a Fast Track article with title: "Prospective, open-label evaluation of a new albuterol multidose dry powder inhaler with integrated dose counter ".

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  • Allergy and Asthma Proceedings is a peer reviewed publication dedicated to distributing timely scientific research regarding advancements in the knowledge and practice of allergy, asthma and immunology. Its primary readership consists of allergists and pulmonologists.

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    Featured topics include asthma, rhinitis, sinusitis, food allergies, allergic skin diseases, diagnostic techniques, allergens, and treatment modalities. Published material includes peer-reviewed original research, clinical trials and review articles.

    Articles marked "F" offer free full text for personal noncommercial use only.

    The journal is indexed in Thomson Reuters Web of Science and Science Citation Index Expanded, plus the National Library of Medicine's PubMed service.
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