title: [A new method to evaluate the eustachian tube function].
abstract: OBJECTIVE
  To study the practicality of a new method to evaluate eustachian tube function.
  
  
  METHODS
  We acquired the tympanogram of 30 normal persons (60 cases) by means of classical tympanometry, Toynbee test and valsalva maneuvre respectively, the peak point of each tympanogram was P1, P2 and P3 corresponding P1 -P2 > 10 daPa or Pmax-Pmin > 15 daPa was accepted as normal.
  
  
  RESULTS
  70% cases were accepted normal, whose peak point shifted obviously.
  
  
  CONCLUSIONS
  The method is a simple, objective and practical one; If the peak point shifts obviously, the function of ET is normal; On the contrary, if the function of ET may be abnormal, other tests should be performed.
authors.affiliation: Department of Otolaryngology, Tongji Hospital, Tongji Medical University, Wuhan 430030.
authors.forename: H T
authors.initials: HT
authors.lastname: Zhen
authors.forename: C F
authors.initials: CF
authors.lastname: Wang
authors.forename: Y H
authors.initials: YH
authors.lastname: Cui
authors.forename: Q X
authors.initials: QX
authors.lastname: Gao
authors.forename: X
authors.initials: X
authors.lastname: Ge
mesh_terms: D000158:Acoustic Impedance Tests; D000293:Adolescent; D000328:Adult; D005064:Eustachian Tube / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged