Chronic respiratory diseases, such as asthma and chronic obstructive pulmonary disease (COPD), represent major global health challenges [1, 2]. These conditions are characterized by persistent airway inflammation, chronic oxidative stress, and airflow obstruction [2, 8]. While they are not curable, various forms of treatment help restore airway patency, reduce shortness of breath, and improve daily life [2]. Inhalation therapy remains a fundamental pillar in managing these obstructive diseases, allowing medications to be delivered directly to the lungs via devices like dry powder inhalers (DPIs) and pressurized metered-dose inhalers (pMDIs) [1, 3, 7].
The Problem of Incorrect Inhaler Technique
Despite the widespread reliance on aerosolized medications, incorrect use of inhalers is prevalent internationally among patients with asthma and COPD [3]. A wide number of errors occur with high frequency during inhalation maneuvers [1]. Research demonstrates that many patients perform at least one overall or critical error when using their devices [3]. These mistakes can significantly hinder the delivery of the drug to the target airways, reducing the overall therapeutic benefit.
Clinical Consequences and Associated Factors
Several publications have directly associated errors in inhalation technique with a poor prognosis for both asthma and COPD [1]. When patients fail to execute the required steps correctly, the medication may fail to reach the lower respiratory tract in sufficient quantities. This can lead to persistent symptoms, a higher frequency of disease exacerbations, and an overall decline in disease control. Factors associated with poor inhalation technique often include a lack of proper initial instruction, inadequate follow-up training, physical limitations, and the wide variety of device designs that require distinct maneuvers [1, 3].
Device Types and Therapeutic Landscape
Different delivery systems, such as dry powder inhalers and pressurized metered-dose inhalers, have unique advantages and specific operational requirements [3, 7]. The design of the device and its compatibility with the drug formulation are critical for successful aerosol delivery [7]. Beyond standard inhaler devices and long-acting bronchodilators or inhaled corticosteroids, the therapeutic landscape continues to evolve with novel agents like ensifentrine for COPD maintenance, which offers dual bronchodilator and anti-inflammatory benefits [4]. However, regardless of how advanced the pharmacological treatment may be, the clinical efficacy of any inhaled medication depends heavily on correct patient administration.
Improving Inhalation Therapy Solutions
Addressing the high rate of inhalation errors requires proactive clinical solutions, including regular technique assessments and patient education [1, 3]. Healthcare providers play a vital role in demonstrating proper device handling, observing patient technique during routine visits, and correcting mistakes promptly. Ensuring that patients master their specific inhalation devices can help bridge the gap between prescribed therapy and real-world clinical effectiveness [3].
Sources
- [1] Common errors in inhalation therapy: Impact and solutions
- [2] The Therapeutic Potential of Myo-Inositol in Managing Patients with Respiratory Diseases
- [3] Inhaler Competence in Nepalese Patients with Asthma and Chronic Obstructive Pulmunory Disease: A Systematic Review
- [4] Ensifentrine: a novel approach to redefining COPD management and implications for additional respiratory diseases
- [5] The Pharmacological Treatment of Chronic Obstructive Pulmonary Disease
- [6] Pulmonology: What You May Have Missed in 2024
- [7] Dry powder inhalers in COPD, lung inflammation and pulmonary infections
- [8] Obstructive lung diseases: COPD, asthma, and many imitators