Abstract: Objective： To investigate the clinical effect of plasma radio-frequency in treatment of obstructive sleep apnea hypopnea syndrome(OSAHS). Method: Thirty-eight cases of OSAHS were treated by plasma radio-frequency ablation and the clinical data of these cases were also retrospectively analyzed. Results：The operation time was 8-15min, hemorrhage was 2-15ml. At post-operative 6 months, 56% cases had an effect, 41% had an improvement, and 3% had no effect, and the total effective rate was 97%. At post-operative 12 months, 53% had an effect, 38% had an improvement, and 9% had no effect, and the total effective rate was 91%. The longest time of apnea, the longest time of hypopnea, the lowest SaO2 and apnea-hypopnea index were statistically significant before and after operation, but there was not a significantly different between post-operative 6 and 12 months. Conclusion： Plasma radio-frequency ablation is convenient, simple and safe for obstructive sleep apnea hypopnea syndrome.

Key words: Plasma radio-frequency ablation, Sleep apnea hypopnea syndrome, obstructive, Treatment outcome