title: Sutter bipolar radiofrequency volumetric tissue reduction of palate for snoring and mild obstructive sleep apnoea: is one treatment adequate?
abstract: OBJECTIVE
  To evaluate the efficacy of bipolar radiofrequency volumetric tissue reduction, using Sutter technology, in the treatment of snoring and mild obstructive sleep apnoea.
  
  
  METHODS
  Prospective, non-randomised trial.
  
  
  METHODS
  Fifty-two patients with simple snoring and mild obstructive sleep apnoea underwent bipolar radiofrequency palate reduction under local anaesthesia.
  
  
  RESULTS
  All patients were Friedman stage II and III, with tonsil sizes graded as zero, one or two, a mean body mass index of 22.6, and a mean age of 36.2 years. Seventy-seven per cent of patients reported improvement in their snoring; patients' mean snoring level (assessed by visual analogue scale) improved from 8.9 to 3.4 (p < 0.05). Eighty-three per cent of patients reported an improvement in their Epworth sleepiness scale score, from a mean of 14.6 to 9.5. Seven out of the 17 patients (41.2 per cent) met the surgical success criteria (i.e. at least a 50 per cent reduction of the pre-procedure apnoea-hypopnoea index, and a post-procedure apnoea-hypopnoea index of below 15). Patients' mean apnoea-hypopnoea index improved from 13.6 to 9.8, and their mean lowest oxygen saturation improved from 88.3 to 92.5 per cent. Eighty-two per cent of patients reported an improvement in their quality of life as a result of the procedure.
  
  
  CONCLUSIONS
  One session of Sutter bipolar radiofrequency tissue volume reduction represents a viable method of treating snoring and mild obstructive sleep apnoea, with good results.
authors.affiliation: Department of Otorhinolaryngology, Pacific Sleep Centre, Singapore. kennypang@hotmail.com
authors.forename: K P
authors.initials: KP
authors.lastname: Pang
authors.forename: J K
authors.initials: JK
authors.lastname: Siow
mesh_terms: D000328:Adult; D017115:Catheter Ablation / Q000009:adverse effects / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010160:Palate, Soft / Q000601:surgery*; D017286:Polysomnography; D011446:Prospective Studies; D011788:Quality of Life / Q000523:psychology; D020181:Sleep Apnea, Obstructive / Q000601:surgery*; D012913:Snoring / Q000601:surgery*; D016896:Treatment Outcome; D055815:Young Adult