Don't suffer in silence with your hearing loss, if you feel that your hearing is not as it should be, feel free to come along to Sussex Audiology Centre for a hearing test. No referral letter is needed, just call 01273 778977 or 01903 243300 to make an appointment at your chosen clinic and one of our audiologists will be happy to help you.
Pure Tone Audiometry (Sometimes referred to as PTA) is a key hearing test used to identify hearing threshold levels, enabling determination of the degree, type and configuration of a hearing loss. Pure Tone Audiogram is a subjective, behavioural measurement of a hearing threshold, as it relies on patient responses to pure tone stimuli. Pure Tone Audiogram is only used on adults and children old enough to cooperate with the test procedure.
Pure Tone Audiogram only measures audibility thresholds, rather than other aspects of hearing such as sound localisation and speech recognition. It provides ear specific thresholds, and uses frequency specific pure tones to give place specific responses, so that the configuration of a hearing loss can be identified. As PTA uses both air and bone conduction audiometry, the type of loss can also be identified via the air-bone gap.
Tympanometry is an examination used to test the condition of the middle ear and mobility of the eardrum (Tympanic Membrane) and the conduction bones by creating variations of air pressure in the ear canal.
Tympanometry is an objective test of middle-ear function. It is not a hearing test, but rather a measure of energy transmission through the middle ear. The test should not be used to assess the sensitivity of hearing and the results of this test should always be viewed in conjunction with pure tone audiometry.
Tympanometry is a valuable component of the audiometric evaluation. In evaluating hearing loss, tympanometry permits a distinction between sensorineural and conductive hearing loss. Furthermore, in a primary care setting, tympanometry can be helpful in making the diagnosis of Otitis Media by demonstrating the presence of fluid build up in the middle ear cavity.
Speech audiometry is routinely carried out in the clinic. It is complementary to pure tone audiometry, which only gives an indication of absolute perceptual thresholds of tonal sounds (peripheral function), whereas speech audiometry determines speech intelligibility and discrimination (between phonemes). It is of major importance during hearing aid fitting and for diagnosis of certain retrocochlear pathologies (tumour of the auditory nerve, auditory neuropathy, etc.) and tests both peripheral and central systems.