Sensorineural hearing loss medical dictionary 8th,neti pot for sinus infection video,define objective tinnitus treatment,home treatments for tinnitus xtc - Test Out

Author: admin, 25.12.2014
Send Home Our method Usage examples Index Contact StatisticsWe do not evaluate or guarantee the accuracy of any content in this site. The results of a patient's hearing screening are illustrated on a graph called an audiogram.
An audiogram indicates how much hearing varies from normal and, if there is a hearing loss, where the problem might be located in the hearing pathway. Frequency or pitch of sound is measured along the horizontal axis of the graph in Hertz (Hz), from 125Hz to 8,000Hz.
Normal, young, healthy human ears can hear frequencies as low as 20Hz and as high as 20,000Hz. Loudness or level of sounds is measured along the vertical axis of the audiogram in decibels (dB). The audiogram shows how loud a sound has to be for the patient to hear it at a particular frequency.
Air conduction thresholds for the right ear (that is, the softest sounds the right ear can hear at each frequency) are marked as an 'O' and the left as an 'X' on the audiogram. Bone conduction thresholds are marked on the audiogram as (better ear), [(right ear) or] (left ear). In the example above, the patient can't hear high pitched sounds as well as the low pitched sounds. If the hearing thresholds obtained by bone conduction are the same as the air thresholds, this indicates no blockage in the outer or middle ear.


A sensorineural hearing loss can be caused by exposure to excessive noise, or by the ageing process.
There is rarely any medical treatment for sensorineural hearing losses and so the impairment is permanent. If the bone conduction hearing thresholds are normal, but there is a loss of hearing for air conduction sounds, this is called a conductive hearing loss. This means that the cochlea is normal, but there is some blockage to sound in the middle or outer ears.
It is possible to have both a sensorineural and a conductive hearing loss - for example, if a person has a noise caused impairment and a perforated ear drum. The degree of hearing loss essentially describes the degree of impact on a person's everyday life. This web site is intended for Australian residents and is not a substitute for independent professional advice. For example, 250 Hz sounds like middle C on the piano, while the high pitched ringing of the telephone is about 3,000Hz. However we only test hearing in the range of 250Hz to 8,000Hz, as most sounds of speech occur in this frequency range.
Conversational voice level is around 65dB, and 120dB is very loud - about as loud as a jet taking off if you are standing 100 metres away. You can see this by looking at the sloping line on the graph: as the frequency increases the required sound level also increases before the patient can hear it.


Middle ear conditions caused by these blockages can often be corrected by medical or surgical treatment. Information and interactions contained in this Web site are for information purposes only and are not intended to be used to diagnose, treat, cure or prevent any disease. Further, the accuracy, currency and completeness of the information available on this Web site cannot be guaranteed. Cirrus Media Pty Ltd, its affiliates and their respective servants and agents do not accept any liability for any injury, loss or damage incurred by use of or reliance on the information made available via or through myDr whether arising from negligence or otherwise. Advances in hearing aid technology and cochlear implants are helping to improve communication for people affected by hearing loss. You will be asked about other medical conditions and about what over-the-counter and prescription medications you take. You may be asked to cover one ear at a time while listening to sounds at different volumes. Tests using a tuning fork can check if there is damage to the parts of the middle ear and eardrum that vibrate. However, the doctor will try to identify the cause of your hearing loss before treatment can begin.



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