ablation for the treatment of mild to moderate obstructive sleep apnea.
MB, Dahan S, Fleury B, Hausser-Hauw C, Chabolle F.
Department of Otolaryngology-Head and Neck Surgery, Foch Hospital, Suresnes,
Obstructive sleep apnea syndrome is due to pharyngeal obstructions,
which can take place at the level of the soft palate. Temperature-controlled
radiofrequency ablation has been introduced as being capable of reducing
soft tissue volume and excessive compliance. The aim of the study was
to evaluate prospectively the possible efficacy of temperature-controlled
radiofrequency ablation applied to the soft palate in subjects with
mild to moderate obstructive sleep apnea syndrome. STUDY DESIGN:
Twenty-nine patients with a respiratory disturbance index between
10 and 30 events per hour, body mass index equal to or less than 30
kg/m2, and obstruction at the level of the soft palate were included
in a pilot, prospective nonrandomized study. METHODS: Snoring and daytime
sleepiness were evaluated subjectively. Treatment (maximum of three
sessions) was discontinued when the bed partner was satisfied with the
snoring level. A full night recording was performed at least 4 months
after the last treatment. RESULTS: Mean snoring level
decreased significantly from 8.6 +/- 1.3 to 3.3 +/- 2.5 on a visual
analogue scale (0-10). Daytime sleepiness decreased nonsignificantly.
Mean respiratory disturbance index decreased significantly from 19.0
+/- 6.1 events per hour to 9.8 +/- 8.6 events per hour. Mean lowest
oxygen saturation value increased nonsignificantly from 85.3% +/- 4.1%
to 86.4% +/- 4.4%. Of the patients, 65.5% were cured of their disease.
CONCLUSIONS: Temperature-controlled radiofrequency
ablation was effective in selected patients with mild to moderate obstructive
sleep apnea syndrome. A full-night polysomnography is required after
completion of treatment to rule out residual disease.
2002 Nov; 112(11): 2086-92