Effect of CPAP Treatment in Patients With Severe Uncontrolled Asthma: The ASTHMA-SLEEP Trial

The aim of the study is to evaluate the impact of CPAP treatment on asthma control in patients with severe uncontrolled asthma and obstructive sleep apnea (OSA)

Background: The prevalence of obstructive sleep apnea (OSA) is high in patients with severe uncontrolled asthma and can worsen asthma control. Previous observational studies demonstrated that CPAP treatment could improve control in patients with mild-moderate asthma. Nevertheless, there are no studies in patients with severe uncontrolled asthma. Primary objective: To evaluate the impact of CPAP treatment on asthma control in patients with severe uncontrolled asthma and AOS. Methodology: Multicenter, prospective, randomized, controlled clinical trial with parallel groups in subjects with severe uncontrolled asthma who are older than 18 years and without sleepiness (Epworth sleepiness scale score ≤10). All included subjects will undergo conventional polysomnography and those with an apnea-hypopnea index (AHI) ≥15/hour will be randomized in a 1:1 ratio to receive conservative treatment or conservative treatment plus CPAP. Monitoring will be carried out during12 months. Patients will be evaluated at inclusion, at 1 month, 6 and 12 months.