- Subjects will be excluded if they meet the following criteria: BMI >95th percentile for age, apnea hypopnea index (AHI) <10 or >50 on in-lab polysomnography (PSG), central or mixed apneas accounting for >25% of the total AHI, any anatomic finding on physical exam or drug induced sleep endoscopy (DISE) that would compromise the performance of stimulation (e.g. concentric soft palate collapse), other medical conditions resulting in medical instability (e.g. congestive heart failure, recent open heart surgery, immunosuppression, or chronic lung disease or aspiration), presence of another medical condition requiring future magnetic resonance imaging (MRI), history of cholesteatoma, or patients with another implantable device which could interact unintentionally with the Inspire system.