title: Complications of temperature-controlled radiofrequency volumetric tissue reduction for sleep-disordered breathing.
abstract: OBJECTIVE
  Temperature-controlled radiofrequency volumetric tissue reduction (RFVTR) is a minimally invasive technique used in the treatment of the tongue base, soft palate and turbinates. Complications seem to be rare, but the scope of previous studies was often limited by the small number of patients included. The aim of this study was to evaluate postoperative complications in a large series of patients.
  
  
  METHODS
  In this retrospective study, temperature-controlled radiofrequency procedures (Somnoplasty) performed between May 1998 and March 2002 were considered. The charts of the patients were analyzed with regard to intra- or postoperative complications.
  
  
  RESULTS
  In total, 322 patients received 497 treatment sessions; 239 of these treatments were isolated and the remaining 258 were combined procedures. Mean follow-up was 122.8 +/- 145.5 days. Concerning radiofrequency surgery, nine postoperative complications were observed (2.0%) as follows: ulcerations of the tongue base or soft palate; dysphagia necessitating hospital admission; temporary palsy of the hypoglossal nerve; and an abscess of the base of the tongue.
  
  
  CONCLUSIONS
  Complications occurring after RFVTR are infrequent and mostly mild. Overall, temperature-controlled RFVTR is a safe procedure when used both in isolation and as part of a combined approach.
authors.affiliation: Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Mannheim, Mannheim, Germany. boris.stuck@hno.ma.uni-heidelberg.de
authors.forename: Boris A
authors.initials: BA
authors.lastname: Stuck
authors.forename: Katrin
authors.initials: K
authors.lastname: Starzak
authors.forename: Thomas
authors.initials: T
authors.lastname: Verse
authors.forename: Karl
authors.initials: K
authors.lastname: Hörmann
authors.forename: Joachim T
authors.initials: JT
authors.lastname: Maurer
mesh_terms: D017115:Catheter Ablation / Q000009:adverse effects; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D010160:Palate, Soft / Q000601:surgery*; D011183:Postoperative Complications / Q000453:epidemiology*; D012189:Retrospective Studies; D012891:Sleep Apnea Syndromes / Q000601:surgery*; D013696:Temperature; D013997:Time Factors; D014059:Tongue / Q000601:surgery*; D014420:Turbinates / Q000601:surgery*