title: Correlation of intraluminal esophageal pressure with the dynamic extension of tracheoesophageal voice in total laryngectomees.
abstract: OBJECTIVE
  To evaluate and correlate the amplitude of esophageal contractions triggered by swallowing water with dynamic extension and habitual, strong and weak sound intensity in total laryngectomees wearing a tracheoesophageal prosthesis.
  
  
  METHODS
  Thirty total laryngectomees using tracheoesophageal voice with a phonatory prosthesis were evaluated by measuring the amplitude of contractions in the proximal, middle and distal esophagus and the pressure of the pharyngoesophageal transition by manometry. In order to measure vocal intensity the subject was asked to emit phonation of the vowel /a/ at habitual, strong and weak intensity which was captured with a sound pressure meter. Dynamic extension was calculated by subtracting strong intensity from weak intensity.
  
  
  RESULTS
  A positive correlation was observed between contraction amplitude and dynamic extension in the proximal (rho: 0.45; p=0.01) and distal (rho: 0.41; p=0.02) esophagus There was no correlation with other parameters.. Total laryngectomees wearing a phonatory prosthesis with a dynamic extension above 21 dBNPS had greater contraction amplitude than laryngectomees with a dynamic extension below this value.
  
  
  CONCLUSIONS
  There was a positive correlation between pressure amplitude in the proximal and distal esophagus and increased dynamic extension. The individuals with normal dynamic extension had greater contraction amplitude in the proximal esophagus than individuals with dynamic extension lower than the expected values for age.
authors.affiliation: Department of Ophthalmology, Otorhinolaryngology and Head and Neck Surgery, Faculty of Medicine of Ribeirao Preto, USP, Sao Paulo, Brazil.
authors.forename: Nathália
authors.initials: N
authors.lastname: Reis
authors.forename: Lílian
authors.initials: L
authors.lastname: Aguiar-Ricz
authors.forename: Roberto Oliveira
authors.initials: RO
authors.lastname: Dantas
authors.forename: Hilton Marcos Alves
authors.initials: HM
authors.lastname: Ricz
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000601:surgery; D004947:Esophagus / Q000503:physiopathology* / Q000601:surgery; D005260:Female; D006801:Humans; D007822:Laryngeal Neoplasms / Q000601:surgery; D007825:Laryngectomy / Q000534:rehabilitation*; D007831:Larynx, Artificial; D008297:Male; D008365:Manometry; D008875:Middle Aged; D010699:Phonation / Q000502:physiology; D011312:Pressure; D013072:Speech, Esophageal; D018709:Statistics, Nonparametric; D014132:Trachea / Q000503:physiopathology / Q000601:surgery; D014833:Voice Quality / Q000502:physiology