title: [The position of submaxillary transcutaneous electrical stimulation for obstructive sleep apnea syndrome].
abstract: OBJECTIVE
  To investigate the effective position of submaxillary transcutaneous electrical stimulation for obstructive sleep apnea syndrome (OSAS).
  
  
  METHODS
  With fixed provocative locus of genioglossus and its controlling nerve, 11 normal healthy men and 9 patients with OSAS during awakening were studied to disclose the effect of submaxillary constant-current stimulation under different stimulative radius or intensity and thickness of submaxillary skin. The effects of electric stimulation in 9 OSAS patients with narrowing of the retrotongue-base-pharynx level were compared with the control during sleep.
  
  
  RESULTS
  The submental and internal side of mandibular angle was effective loci for stimulating genioglossus. Stimulative radius and intensity of both loci were not significantly different (P < 0.05) and no influence of the skin thickness was found. During sleep, indices of breath disorder (P < 0.05), oxygen saturation (P < 0.05) and clinical symptoms had significantly improved.
  
  
  CONCLUSIONS
  Submaxillary electrical stimulation with fixed provocative locus is effective for the treatment of OSAS. The mechanism is perhaps stimulation of genioglossus pushes the tongue ahead and opens the pharyngeal cavity.
authors.affiliation: Department of Otorhinolaryngology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
authors.forename: H
authors.initials: H
authors.lastname: Yang
authors.forename: X
authors.initials: X
authors.lastname: Meng
authors.forename: Y
authors.initials: Y
authors.lastname: Zhu
mesh_terms: D000328:Adult; D000368:Aged; D004599:Electric Stimulation Therapy; D006801:Humans; D008297:Male; D008875:Middle Aged; D010609:Pharyngeal Muscles / Q000502:physiology; D020181:Sleep Apnea, Obstructive / Q000503:physiopathology* / Q000628:therapy; D004561:Transcutaneous Electric Nerve Stimulation