Firestone Institute for Respiratory Health, St. Joseph's Healthcare and the Michael G DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada
The George Institute for Global Health, Sydney, Australia.
Eur Respir J. 2017 Sep 9;50(3). doi: 10.1183/13993003.01103-2017. Print 2017 Sep.
Poor adherence to maintenance pharmacotherapy is a reality in asthma. Studies confirm that when symptoms worsen, most patients increase short-acting β-agonist (SABA) use, instead of using controller medication. This behaviour might be attributable to several paradoxes in the current treatment approach. These paradoxes include the recommended use of a SABA bronchodilator alone at Global Initiative for Asthma (GINA) step 1, despite the fact that asthma is a chronic inflammatory disease. At step 1, the patient has autonomy and their perception of need and disease control is accepted, but at higher asthma treatment steps a fixed-dose approach is recommended, irrespective of symptom severity. The unintended consequence is the establishment of a pattern of early over-reliance on SABA. New approaches that avoid these paradoxes are needed, such as patient-adjusted therapy, in which patients adopt a symptom-driven approach using a combination reliever/controller. We propose that SABA reliever monotherapy should be replaced by a combination of inhaled corticosteroid (ICS) and formoterol, or similar rapid-onset bronchodilator, as reliever therapy for patients at GINA steps 1 or 2. This will ensure early and more regular administration of a controller medication. However, a significant body of clinical data will be needed before this approach can be approved by regulatory authorities.
哮喘患者的维持性药物治疗依从性较差是一个现实问题。研究证实,当症状恶化时,大多数患者会增加短效β-受体激动剂(SABA)的使用,而不是使用控制药物。这种行为可能归因于当前治疗方法中的几个悖论。这些悖论包括在全球哮喘倡议(GINA)第 1 步中单独推荐使用 SABA 支气管扩张剂,尽管哮喘是一种慢性炎症性疾病。在第 1 步中,患者具有自主权,他们对需求和疾病控制的感知被接受,但在更高的哮喘治疗步骤中,建议采用固定剂量的方法,而不考虑症状的严重程度。其意想不到的后果是建立了早期过度依赖 SABA 的模式。需要寻求新的方法来避免这些悖论,例如患者调整治疗,其中患者采用基于症状的方法,使用联合缓解/控制药物。我们建议用吸入皮质激素(ICS)和福莫特罗,或类似的快速起效支气管扩张剂代替 SABA 缓解药物治疗 GINA 第 1 或 2 步的患者。这将确保尽早更规律地使用控制药物。然而,在这种方法得到监管机构批准之前,还需要大量的临床数据。