The Relationship Between Clinical Trial Participation and Inhaler Technique Errors in Asthma and COPD Patients

Improved inhaler handling after repeated inhalation guidance for elderly patients with bronchial asthma and chronic obstructive pulmonary disease

Accurate evaluation of inhaler handling is essential for improved treatment of bronchial asthma (BA) and chronic obstructive pulmonary disease (COPD). Many studies have described the correlation between age, inhalation guidance, and procedure improvement. Elderly patients should receive proper inhalation guidance. This was a retrospective open cohort study conducted at a single hospital with outpatient open pharmacies that provided inhalation guidance to patients of BA and COPD. A total of 525 cases were included in the study. The median age was 71 years with no significant difference between genders (males: 71 ± 16.0 years; females: 72 ± 16.1 years; P = .24). There were 226 males (43.0%) and 299 females (57.0%; P = .03). BA was significantly more prevalent than COPD (P < .001). There was no significant difference in dry powder inhaler (DPI) and pressurized metered-dose inhaler (pMDI) visits in those <60 years of age (P = .23). pMDI was used significantly more often than DPI in those aged 60 to 90 years of age (P < .001). In both <70 and >70 years of age, the most common error with DPI use was improper inhalation speed, which reduced (improved) at the third visit. Gargling errors were most common with DPI use at the second visit and with pMDI at the first visit in both age groups, which subsequently reduced rapidly. Continuous repeated guidance steadily and significantly decreased errors with all devices (P < .001 for DPI, pMDI, and soft mist inhaler). Elderly cases (>70 years of age) should undergo continuous repeated guidance to reduce inhalation errors like inhalation speed and gargling errors.

Is Inhaler Technique Adequately Assessed and Reported in Clinical Trials of Asthma and Chronic Obstructive Pulmonary Disease Therapy? A Systematic Review and Suggested Best Practice Checklist

BACKGROUND

Inhaled medications are central to treating asthma and chronic obstructive pulmonary disease (COPD), yet critical inhaler technique errors are made by up to 90% of patients. In the clinical research setting, recruitment of subjects with poor inhaler technique may give a false impression of both the benefits and the necessity of add-on treatments such as biologic therapies.

OBJECTIVE

To assess the frequency with which inhaler technique is assessed and reliably optimized before and during patient enrollment into randomized controlled trials (RCTs) addressing the efficacy of topical therapy, and the escalation of therapy for asthma and COPD.

METHODS

Systematic searches were conducted of PubMed and Embase for RCTs published in the past 10 years involving patients with a diagnosis of asthma or COPD undergoing escalation of baseline inhaled therapy (stepping up, changing, adding, switching, increasing, etc) or the introduction of biologic agents.

RESULTS

Searches highlighted 1,014 studies, 118 of which were eligible after the removal of duplicates as well as screening and full text review. Of these, only 14 (11.9%) included accessible information in the methods section or referred to such information in online supplements or protocols concerning assessment of participants' inhaler technique. We therefore developed the proposed Best Practice Inhaler Technique Assessment and Reporting Checklist.

CONCLUSIONS

Our study identifies a concerning lack of checking and correcting inhaler technique, or at least reporting that this was undertaken, before enrollment in asthma and COPD RCTs, which may affect the conclusions drawn. Mandating the use of a standardized checklist in RCT protocols and ensuring all published RCTs report checking and correcting inhaler technique before enrollment are important next steps.

A specialized training program on inhaler technique delivered by pharmacists to nurses: a study from the United Arab Emirates

Background

Inhaled drug delivery has been hailed as a major advancement in respiratory therapeutics. However, a major limitation to use the inhaled medications effectively is the inability of patients and nurses to use and demonstrate the proper use of these devices correctly. Being the drug experts, pharmacists are in a pivotal position to delivered tailored education to their peers, the nurses.

Aim

This study aims to examine nurses' knowledge of asthma management, their ability to demonstrate proper inhaler technique, and the impact of a specialized workshop training program delivered by skilled pharmacists on improving their performance.

Methods

This is a pre- and post-cross-sectional study design in hospital setting where nurses were recruited from the respiratory and emergency departments within a healthcare facility in the United Arab Emirates (UAE). The nurses attended a training workshop prepared and delivered by skilled pharmacists on inhaler technique demonstration skills. Nurses' inhaler technique demonstration skills for Diskus, Turbuhaler, and pMDI were assessed at baseline, immediately after the workshop, and after four weeks. The nurses completed the demographic and Asthma Knowledge Questionnaire (AKQ).

Results

A random convenience sample of registered nurses (n=20) from the respiratory and emergency departments was recruited from a tertiary hospital in Sharjah, UAE, with a mean age of 35.25 (SD=6.96) years, of whom 90% were females. The mean number of years of experience was 12.00 years (SD=5.81). Inhaler technique assessment revealed low inhaler technique scores for all the three study inhalers at baseline (mean score for Diskus=3.85 (SD=2.87); Turbuhaler=3.70 (SD=3.20); pMDI=4.50 (SD=2.65)) Significant improvements in inhaler technique scores were noted after the workshop (Diskus=8.9 (SD=0.31); Turbuhaler=8.9 (SD=0.31); pMDI=8.0 (SD=0.00), P<0.001). A significant difference in AKQ scores was found before (mean=4.85 (SD=1.27)) and after (mean=7.50 (SD=0.95)) the workshop training session (P<0.001), and four weeks after the workshop training session (mean=7.55 (SD=0.76), P<0.001).

Conclusion

The UAE nurses' inhaler technique and AKQ scores were suboptimal at baseline. The specialized training program prepared and delivered by the skilled pharmacists improved nurses' inhaler technique demonstration skills and AKQ scores. Such improvements would reflect positively on patients' asthma management outcomes as nurses are the health care professionals who interact the most with the patients during hospitalization.

Inhaler Use Technique in Chronic Obstructive Pulmonary Disease Patients: Errors, Practices and Barriers

Background

Inhaled medications are the main therapeutic treatment of chronic obstructive pulmonary disease (COPD) and inhaler technique remained important that can increase medication efficacy, reducing dose and side effects. Poor inhaler technique is multi-factorial and the quality of inhaler technique has not previously assessed in Pakistan. We conducted a study to examine a range of competing factors that impact COPD patient willingness, practices, and preference in using their inhalers.

Methods

A cross-sectional of 765 patients with COPD were interviewed and assessed by qualitative questionnaires. Objective inhalation technique and steps assessment was performed; satisfaction, preferences, perception, and practice of different types of inhaler devices were evaluated at a single cross-sectional visit at the study enrolment.

Results

The study included 765 participants of mean age 58.7 years (SD ±7.8); 32% males and 68% females. Almost all of the females were exposed to biomass fuel smoke exposure (99%) and pipe (Huka) smokers 53%, while most male participants were cigarette smokers (92%). Only 6.3% of participants were able to perform correct steps of inhaler use, and few educated patients completed 7-steps. 66% of patients were using dry powder inhalers (DPI) inhaler devices and mostly performed the steps 1, 2, and 4 (98%) correctly, while 44% who were using metered-dose inhalers (MDI) completed only steps 2 and 4 correctly (88%). The majority of participants reported the particular inhaler devices was prescribed by the visiting consultants (54%). Interestingly, they were using two inhalers together (47%) relieving symptoms of dyspnea (83%) and cough (73%). The inhaler use technique was demonstrated to most of the patients by the pharmacy salesman (38.4%), while 15.8% reported that their doctors taught them the inhaler technique. 54.2% reported reason for poor adherence to inhaler use as they understand it might not work lately and 75.2% were not aware of any side effects associated with the regular use of an inhaler.

Conclusions

Poor inhaler technique is highly prevalent and the associated errors did not appear to be dependent on device type. Most of the participants had not receive proper training about the correct use and were not involved in decision making about the choice of inhaler device.