title: [Vocal sound study in supracricoid partial laryngectomy].
abstract: OBJECTIVE
  Vocal sound was studied in 21 patients underwent supracricoid partial laryngectomy using Dr. Speech.
  
  
  METHODS
  Vocal sound tests and frequency spectrum analysis were used in 4 different approaches (CHEP, CHP, TCHEP, TCHP) both before and after the operation.
  
  
  RESULTS
  Vibration pattern of new glottidis formed after the four different operation approaches was approximately the same demonstrating an augmentation of mucous membrane fluctuation. This vibration pattern were increasing and stabilizing gradually with time.
  
  
  CONCLUSIONS
  Retaining on both sides and one side in supracricoid partial laryngectomy facilitates restoration of vocal function.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, The Putuo Hospital of Shanghai University of Chinese Medicine,Shanghai, 200062, China. vweishen@sh163.net
authors.forename: Wei
authors.initials: W
authors.lastname: Shen
authors.forename: Shankai
authors.initials: S
authors.lastname: Ying
authors.forename: Shijun
authors.initials: S
authors.lastname: Qian
authors.forename: Bing
authors.initials: B
authors.lastname: Chen
authors.forename: Jing
authors.initials: J
authors.lastname: Zhu
authors.forename: Jun
authors.initials: J
authors.lastname: Wei
mesh_terms: D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000601:surgery*; D006801:Humans; D007822:Laryngeal Neoplasms / Q000601:surgery*; D007825:Laryngectomy / Q000379:methods*; D008297:Male; D008875:Middle Aged; D016896:Treatment Outcome; D014833:Voice Quality