title: Hyperbaric oxygen therapy for radionecrosis of the jaw: a randomized, placebo-controlled, double-blind trial from the ORN96 study group.
abstract: OBJECTIVE
  To determine the efficacy and safety of hyperbaric oxygen therapy (HBO) for overt mandibular osteoradionecrosis.
  
  
  METHODS
  This prospective, multicenter, randomized, double-blind, placebo-controlled trial was conducted at 12 university hospitals. Ambulatory adults with overt osteoradionecrosis of the mandible were assigned to receive 30 HBO exposures preoperatively at 2.4 absolute atmosphere for 90 minutes or a placebo, and 10 additional HBO dives postoperatively or a placebo. The main outcome measure was 1-year recovery rate from osteoradionecrosis. Secondary end points included time to treatment failure, time to pain relief, 1-year mortality rate, and treatment safety.
  
  
  RESULTS
  At the time of the second interim analysis, based on the triangular test, the study was stopped for potentially worse outcomes in the HBO arm. A total of 68 patients were enrolled and analyzed. At 1 year, six (19%) of 31 patients had recovered in the HBO arm and 12 (32%) of 37 in the placebo arm (relative risk = 0.60; 95% CI, 0.25 to 1.41; P = .23). Time to treatment failure (hazard ratio = 1.33; 95% CI, 0.68 to 2.60; P = .41) and time to pain relief (hazard ratio = 1.00; 95% CI, 0.52 to 1.89; P = .99) were similar between the two treatment arms.
  
  
  CONCLUSIONS
  Patients with overt mandibular osteoradionecrosis did not benefit from hyperbaric oxygenation.
authors.affiliation: Service de Réanimation Médicale-Hôpital Raymond Poincaré (AP-HP), Université de Versailles Saint Quentin en Yvelines, 104 Boulevard Raymond Poincaré, 92380 Garches, France. djillali.annane@rpc.ap-hop-paris.fr
authors.forename: Djillali
authors.initials: D
authors.lastname: Annane
authors.forename: Joël
authors.initials: J
authors.lastname: Depondt
authors.forename: Philippe
authors.initials: P
authors.lastname: Aubert
authors.forename: Maryvonne
authors.initials: M
authors.lastname: Villart
authors.forename: Pierre
authors.initials: P
authors.lastname: Géhanno
authors.forename: Philippe
authors.initials: P
authors.lastname: Gajdos
authors.forename: Sylvie
authors.initials: S
authors.lastname: Chevret
mesh_terms: D004311:Double-Blind Method; D005260:Female; D006258:Head and Neck Neoplasms / Q000532:radiotherapy*; D006801:Humans; D006931:Hyperbaric Oxygenation; D008297:Male; D008336:Mandibular Diseases / Q000209:etiology* / Q000473:pathology / Q000628:therapy*; D008875:Middle Aged; D010025:Osteoradionecrosis / Q000209:etiology* / Q000628:therapy*; D010919:Placebos; D016896:Treatment Outcome
chemical_list: D010919:Placebos