0571 Comparison Of Ahi And Ess Outcomes Between Patients Undergoing Palatal Surgery Versus Upper Airway Stimulation Adhere Registry

Introduction CPAP intolerance occurs in 30-50% of obstructive sleep apnea patients, and some seek surgical alternatives. Palatal surgery is a common alternative. Upper Airway Stimulation (UAS), using an implantable hypoglossal nerve stimulator is another recent option. We retrospectively compared post-operative outcomes between the two methods. Methods Palatal surgery (PS) was defined as either uvulopalatopharyngoplasty or expansion pharygoplasty. Patients who underwent palatal surgery, and would have met general UAS criteria (BMI ≤35 and AHI between 15-65) were selected for chart review. UAS outcomes were collected from the ADHERE multi-center international registry. Demographics, baseline and post-operative outcomes were compared. Data are presented as mean and standard deviation. Results (90% vs 76%), and overweight (PS-BMI: 29 ± 3 vs. UAS-BMI: 29 ± 4, p=0.50). The palatal surgery cohort was younger than the UAS cohort (46 ± 11 vs 61 ±11 years, p