RT Book, Section
A1 Silverman, Carol A.
A1 Silman, Shlomo
A2 Lalwani, Anil K.
SR Print(0)
ID 1169078724
T1 Audiologic Testing
T2 Current Diagnosis & Treatment Otolaryngology—Head and Neck Surgery, 4e
YR 2020
FD 2020
PB McGraw-Hill Education
PP New York, NY
SN 9780071847643
LK accessmedicine.mhmedical.com/content.aspx?aid=1169078724
RD 2024/04/19
AB Audiologic  testing  comprises  behavioral  measures  of  hearing  sensitivity  and  speech-recognition  performance;  objective  physiologic  measures  of  middle  ear,  cochlear,  and  retrocochlear  status;  and  objective  electrophysiologic  measures  of  peripheral  auditory  function  and  auditory  nervous  system  function.  The  fundamental  behavioral  audiologic  measures,  the  results  of  which  are  usually  represented  on  an  audiogram,  include  pure-tone  air-conduction  and  bone-conduction  hearing  thresholds,  speech-recognition  threshold  (SRT),  and  suprathreshold  speech-recognition  scores.  Objective,  physiologic  measures  of  auditory  function  include  (a)  otoacoustic  emissions  testing  for  examination  of  peripheral  auditory  status  and  (b)  the  acoustic  admittance  test  battery,  including  tympanometry  for  assessment  of  middle-ear  status,  and  acoustic-reflex  threshold  and  decay  (adaptation)  testing  for  assessment  of  middle-ear,  cochlear,  and  retrocochlear  status.  Objective  auditory  electrophysiologic  measures  for  estimation  of  hearing  sensitivity  and  identification  of  site  of  lesion  along  the  auditory  pathway  include  auditory  evoked  potentials  testing,  most  commonly  electrocochleography  (ECochG),  auditory  brainstem  response  (ABR)  testing;  auditory  middle  latency  response  (AMLR)  testing;  auditory  steady  state  response  (ASSR)  testing;  and  cortical  auditory  evoked  potentials  (CAEPs).  Audiologic  testing  also  includes  vestibular  assessment  based  on  measures  such  as  videonystagmography,  but  vestibular  testing,  which  is  beyond  the  scope  of  this  chapter,  is  covered  elsewhere  in  this  text.