Use of ICS and Fast-Acting Bronchodilators in Asthma: Past, Present, and Future

Primary care practitioners (PCPs) play a key role in asthma management since most patients with asthma are treated in primary care settings. Despite continual advances in asthma care, important practice gaps remain, and the high burden of asthma exacerbations persists, with 43% of children with asthma and 41% of adults with asthma in the United States experiencing an asthma exacerbation in 2020. Uncontrolled asthma, incomplete assessment of exacerbation and asthma control history, reliance on systemic corticosteroids (SCS) or short-acting beta2-agonist (SABA)-only therapy, and lack of patient adherence to anti-inflammatory maintenance therapies are challenges clinicians face today with asthma care. Inhaled corticosteroids (ICS) have been thought to have slow onset of action; however, recent data indicate that ICS onset of action on bronchial tissue is seconds to minutes through nongenomic effects. A large body of evidence supports the use of ICS + fast-acting bronchodilator treatments when used as needed in response to symptoms to improve asthma control and reduce rates of exacerbations. The symptoms that occur leading up to an asthma exacerbation provide a window of opportunity to intervene with ICS + fast-acting bronchodilators, potentially preventing the exacerbation and reducing the need for SCS. Incorporating patient perspectives and preferences when designing asthma regimens will help patients be more engaged in their therapy and may contribute to improved outcomes. In January 2023, a SABA-ICS combination rescue inhaler was approved by the US Food and Drug Administration (FDA) as the first asthma rescue inhaler for as-needed use to reduce the risk of exacerbations.