“…In this study, patients were grouped, based on their AHI, as mild, moderate, or severe OSA. AHI scores improved in patients with moderate OSA (from 22.3 ± 4.8 to 20.7 ± 8.2, p = 0.023) and severe OSA (from 52.3 ± 21.4 to 43.6 ± 23.9, p = 0.034), while patients with mild OSA did not show significant changes in AHI [57]. Of note, despite statistically significant changes of the AHI, surgery did not completely improve the AHI, which was still well above the cutoff of 5 for normal sleep, reinforcing the idea that in CRS patients with comorbid OSA, sleep apnea needs to be treated with effective therapeutic measures targeting OSA.…”