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Weber’s Test

 
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Overview

The Weber test uses conduction of sound via the forehead to determine the nature of a patient's hearing loss.
  • How to Elicit

  • Place a 256hz tuning fork onto the centre of the patient's forehead, and ask whether they can hear the vibration. If heard, ask on which side the vibration is louder.
  • Interpretation

  • Symmetrical - normal hearing
  • Louder in deaf ear - conductive hearing loss
  • Louder in normal ear - sensorineural hearing loss
  • Causes of Hearing Loss

  • Conductive

  • External auditory canal - wax, foreign body, tumour, otitis externa
  • Middle ear - perforated eardrum, otitis media, otosclerosis
  • Sensorineural

  • Presbycusis (age-related hearing loss)
  • Trauma - noise trauma
  • Inflammation - meningitis, encephalitis, SLE, giant cell arteritis
  • Ototoxicity - gentamicin, frusemide, cisplatin
  • Tumour - acoustic neuroma, meningioma, SCC, metastasis
  • Idiopathic - Meniere’s disease
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