Objective: To assess the effectiveness of low-temperature bipolar radiofrequency ablation for Coblation of the tongue base in the multilevel management of supine-position-associated obstructive sleep apnea syndrome (OSAS). Study Design and Setting: A retrospective analysis of the data of 16 subjects undergoing uvulopalatopharyngoplasty and tongue base Coblation. The efficacy of the procedure was investigated on the basis of polysomnographic results. Results: The success rate was 62.5% in 16 patients who underwent surgery for OSAS, with decreases in the mean Apnea Hypopnea Index of 20.1–8.9. The success rate was separately evaluated according to the subjects’ posture. A rate of 87.5% was found for the supine position, while the rate was 56.6% in non-supine positions. The minimum postoperative O2 saturation was significantly increased for REM and non-REM stage 3 sleep rates. Conclusion: It is important to evaluate the relation of the disease to the body position in sleep apnea subjects. Coblation of the tongue base is an applicable method of therapy for patients who have sleep apnea that is more marked in the supine position.

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