title: Administration Technique and Acceptance of Inhaler Devices in Patients With Asthma or COPD.
abstract: BACKGROUND
  Correct technique and patient acceptance of inhalation devices for lung disease influence successful long-term management. Patient ability to use the proper technique may differ depending on the device as well as patient factors.
  
  
  OBJECTIVE
  The objectives of our study are to measure self-reported level of acceptability of inhaler devices in community settings and compare correct use of inhaler devices using a novel scale for measuring appropriate inhaler technique.
  
  
  METHODS
  This prospective observational study enrolled patients from 3 different practice sites with asthma and/or chronic obstructive pulmonary disease (COPD) who were using an inhaler device. In addition to describing the samples' overall acceptability and correct use scores for the different inhalers, acceptability and correct use scores were compared based on patient characteristics.
  
  
  RESULTS
  A total of 161 patients completed the study. The results show that acceptability was lowest for the pressurized metered dose inhaler (pMDI) with a spacer (S); effective use was best demonstrated with pMDI and poorest with pMDI-S. Older patients were found to be more accepting of the HandiHaler device than younger patients. Patients reporting taking more inhaled drugs were found to be more accepting of the pMDI-S than those taking fewer drugs. Finally, patients reporting taking more inhaled drugs demonstrated less-effective use of the HandiHaler device than patients taking fewer drugs.
  
  
  CONCLUSIONS
  Pulmonary disease duration does not ensure improved use for all inhalers; patients taking more drugs demonstrate less-effective use for some devices. Assessment of patient acceptance and factors that predict the ability to use a device should be considered to individualize therapy.
authors: University of Alberta, Edmonton, AB, Canada.
authors: Cheryl A
authors: CA
authors: Sadowski
authors: University of Alberta, Edmonton, AB, Canada.
authors: Ken
authors: K
authors: Cor
authors: University of Alberta, Edmonton, AB, Canada.
authors: Andrew
authors: A
authors: Cave
authors: University of Alberta, Edmonton, AB, Canada hoan@ualberta.ca.
authors: Hoan Linh
authors: HL
authors: Banh
mesh_terms: D000280:Administration, Inhalation; D000328:Adult; D000368:Aged; D001249:Asthma / Q000188:drug therapy*; D005260:Female; D006801:Humans; D008297:Male; D036501:Metered Dose Inhalers; D008875:Middle Aged; D009330:Nebulizers and Vaporizers; D011446:Prospective Studies; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy*
keywords: COPD; asthma; inhalation devices; inhalation technique; inhaler; metered-dose inhalers