title: [Changes of distortion product otoacoustic emissions in the patients with iron deficient anaemia].
abstract: OBJECTIVE
  To observe the changes of distortion product otoacoustic emissions (DPOAE) in the patients with iron deficient anaemia (IDA).
  
  
  METHODS
  Sixty cases who were taken health physical examination at ZhaBei District Central Hospital were divided into two groups, the normal group (30 cases, 60 ears) and the IDA group (30 patients, 60 ears) depend on the results of examination of hemoglobin and serum ferritin. The changes of DPOAEs at 4 kHz were observed.
  
  
  RESULTS
  A statistically significant decrease of DPOAE threshold level compared with the normal controls was seen at 4 kHz in the patients with IDA.
  
  
  CONCLUSIONS
  The decreased threshold level of DPOAE at 4 kHz in IDA patients should relate to sensorineural hearing loss directly.
authors.affiliation: Department of Otolaryngology, Jingan District Central Hospital, Shanghai, 200040, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Shen
authors.forename: Aihua
authors.initials: A
authors.lastname: Sun
authors.forename: Qing
authors.initials: Q
authors.lastname: Ye
authors.forename: Jie
authors.initials: J
authors.lastname: Bi
authors.forename: Jue
authors.initials: J
authors.lastname: Chen
authors.forename: Ting
authors.initials: T
authors.lastname: Zhang
authors.forename: Zhenxin
authors.initials: Z
authors.lastname: Chen
authors.forename: Zhen
authors.initials: Z
authors.lastname: Fang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D018798:Anemia, Iron-Deficiency / Q000097:blood / Q000503:physiopathology*; D001301:Audiometry, Pure-Tone; D001309:Auditory Threshold; D016022:Case-Control Studies; D003051:Cochlea / Q000503:physiopathology; D005260:Female; D005293:Ferritins / Q000097:blood; D006454:Hemoglobins / Q000032:analysis; D006801:Humans; D008297:Male; D008875:Middle Aged; D017084:Otoacoustic Emissions, Spontaneous; D055815:Young Adult
chemical_list: D006454:Hemoglobins; D005293:Ferritins