Authors of a recent study sought to examine which factors impact a COPD patient's ability to properly use an inhaler. Find out the results with this quick quiz.
Authors of a recent cross-sectional study sought to find out.2 They examined the inhalation technique of 300 stable COPD patients aged >40 years who performed 521 inhalation maneuvers with 10 different IDs. The objective was to assess if ID type, preference for or number of IDs used, patient demographics, clinical and functional patient characteristics, and patient beliefs about IDs are associated with accurate inhalation technique.
What did the study find? Take the 8-question above to find out.
Question 1. Among the 521 inhalation maneuvers demonstrated, at least 1 incorrect step was found in approximately what percentage of demonstrations?
Answer: D. 48%. At least 1 incorrect step was found in 48.2% of inhalation demonstrations; critical errors (incorrect priming or loading; incorrect inhalation) were observed in 29.9%.
Question 2. Among the 156 (29.9%) demonstrations with critical errors, which of the above ID types had the highest percentage of observed critical errors?
Answer: A. pMDI. Among the 156 inhalation demonstrations with critical errors, 53.6% were observed with pMDIs, followed by 28.4% with a soft-mist inhaler, 26.8% with mDPIs, and 24.2% with sDPIs. Also, pMDIs had a significantly higher percentage of critical errors related to inhalation maneuvers (30.6%) vs priming/loading (5.8%).
Question 3. Among the 300 patients examined, approximately what percentage demonstrated misuse due to critical errors?
Answer: D. 39%. A total of 39.3% demonstrated misuse due to critical errors with a higher percentage of women (52.1%) demonstrating critical errors vs men (35.4%).
Question 4. True or false? There was a higher percentage of misuse related to priming or loading IDs vs inhalation maneuver.
Answer: B. False. Misuse was related to priming/loading IDs in 6.9% of demonstrations vs 13.1% related to inhalation maneuver. Misuse was related to both in 10% of demonstrations. More difficulty with inhalation maneuver was seen with pMDI, in priming with a Turbuhaler® (mDPI), and in both maneuvers with a Handihaler® (sDPI).
Question 5. Among the 10 ID types used in the study, which one of the above was NOT incorrectly used?
Answer: C. Aeroliser.® Aeroliser,® a sDPI, was the only brand that was not incorrectly used by participants and showed no critical errors related to priming/loading or inhalation maneuver.
Question 6. True or false? Patients incorrectly performed more inhalation maneuvers when they used 1 inhaler vs 4 inhalers.
Answer: B. False. Incorrect use was performed in 31.6% of demonstrations with 1 inhaler, 24.8% with 2 inhalers, 33.4% with 3 inhalers, and 66.7% with 4 inhalers.
Question 7. Among the 239 demonstrations using a mDPI, approximately what percentage of critical errors seen were related to inhalation maneuvers?
Answer: D. 11%. Demonstrations using a mDPI showed more critical errors related to inhalation maneuvers (11.8%) vs priming/loading (8.4%).
Answer: C. Turbuhaler.® Approximately 35% of demonstrations using the Turbuhaler® mDPI had critical errors vs 29.3% with Diskus;® 22.6% with Genuair;® 25.6% with Spiromax;® and 16.1% with Ellipta.®
1. Pothirat C, Chaiwong W, Phetsuk N, et al. Evaluating inhaler use technique in COPD patients. Int J Chron Obstruct Pulmon Dis. 2015;10:1291–1298.
2. Duarte-de-AraÃºjo A, Teixeira P, Hespanhol V, Correia-de-Sousa J. COPD: misuse of inhaler devices in clinical practice. Int J Chron Obstruct Pulmon Dis. 2019;14:1209-1217.
Inhaled medication is the foundation of chronic obstructive pulmonary disease (COPD) treatment and therapeutic success is contingent upon proper inhalation technique. However, clinical studies show that approximately 94% of patients mishandle their inhalation devices (IDs), putting them at increased risk for severe COPD exacerbations.1 What factors impact a patient’s ability to correctly use an ID?Â (Continued below)