[Effects of uvulopalatopharyngoplasty in adult patients with obstructive sleep apnea syndrome].

We performed uvulopalatopharyngoplasty (UPPP) in 51 adult patients with obstructive sleep apnea syndrome (OSAS). After UPPP, there were statistically significant improvements in apnea-hypopnea index (AHI), the lowest value of oxygen saturation during sleep and total time of apnic episodes. 28 patients (54.9%) were good responders who represented more than 50% improvements in their AHI. Poor responders tended to be more severe and older than good responders. After cephalometric analysis, poor responders were revealed to show significantly poor mandibular prognatism and also lower positioned hyoid bone than good responders.