audiogram


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Related to audiogram: pure tone audiogram

audiogram

 [aw´de-o-gram″]
1. a graphic record of the findings by audiometry.
2. the hearing test done by audiometry; it tests the ability to hear pure tones in each ear. A careful and complete audiogram will test both bone conduction and air conduction. A comparison between these two types of conduction can be useful in localizing which part of the hearing mechanism is responsible for any hearing loss: if the loss is due to a problem with the portion of the middle ear that conducts sound from the ear canal to the inner ear, it is a conductive hearing loss; if it is due to the inner ear or the nerve that conducts sound signals to the brain, it is a sensorineural hearing loss. The results of audiograms are usually displayed in graph form; the amount of hearing is tested at different sound frequencies (measured in hertz). Most audiograms go from around 250 hertz to 4000 hertz. Lack of hearing at below 20 decibels on the graph is within the normal range; lack of hearing at above 20 decibels is considered abnormal.

The American Speech-Language-Hearing Association has published guidelines for audiologic screening, which are available at their web site: http://www.asha.com. In addition, the U.S. Preventive Services Task Force, part of the Agency for Healthcare Research and Quality, has recommendations on screening for hearing impairment and notes that there is good evidence that screening of newborns leads to earlier identification and treatment. The recommendations are available through the agency's web site: http://www.ahcpr.gov.

au·di·o·gram

(aw'dē-ō-gram),
The graphic record drawn from the results of hearing tests with an audiometer, which charts the threshold of hearing at various frequencies against sound intensity in decibels.
[audio- + G. gramma, a drawing]

audiogram

(ô′dē-ə-grăm′)
n.
1. A graphic record of hearing ability for various sound frequencies that is used to measure hearing loss.
2. The procedure performed to produce such a record.

audiogram

[ô′dē·əgram′]
Etymology: Gk, audire + gramma, record
a chart showing the faintest level at which an individual is able to detect sounds of various frequencies, usually in octaves from 125 Hz to 8000 Hz. See also audiometry.

audiogram

A recording of hearing measured over a range of sound frequencies, usually from 100 Hz to 800 Hz. The audiogram is a plot of tone intensity in decibels on the vertical axis (0 to 80 dB) and frequency on the horizontal axis (250 to 4000 Hz). The sensation of sound results from the transmission of vibrations at a certain frequency—sound waves—which pass through air (air conduction) and craniofacial bones (bone conduction).

audiogram

Audiology A test in which hearing is measured over a range of sound frequencies. See Pure tone audiometry.

au·di·o·gram

(aw'dē-ō-gram)
The graphic record drawn from the results of hearing tests with the audiometer; charts the threshold of hearing at various frequencies against sound intensity in decibels.
[L. audio, to hear + G. gramma, a drawing]

audiogram

A record of the sensitivity, or threshold, of hearing at different frequencies.

Audiogram

A chart or graph of the results of a hearing test conducted with audiographic equipment. The chart reflects the softest (lowest volume) sounds that can be heard at various frequencies or pitches.
Mentioned in: Audiometry

au·di·o·gram

(aw'dē-ō-gram)
The graphic record drawn from the results of hearing tests with the audiometer.
[L. audio, to hear + G. gramma, a drawing]

audiogram (ô´dēəgram),

n a graphic summary of the measurement of hearing loss showing the number of decibels lost at each frequency tested.
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After adjusting for differences in demographics, the data support the finding that BSSHL is a relatively rare subtype of SSHL with more descending audiograms, inferior hearing outcomes, less chances of comorbid dyslipidemia, higher rates of preceding viral infections, and a lower level of immune markers, rather than a completely different disease entity compared to USSHL.
The rate of audiometric response on the pure-tone audiogram was higher in the AIT group than in the ANT group (57.
The date on which each audiogram was completed is recorded on DD 2215 and DD 2216.
The final sample included 1,413,789 audiograms for workers employed by 25,908 U.
The test results were displayed in a typical audiogram format, indicating pure tone air conduction hearing sensitivities.
Audiograms are useful, particularly when serial tests are performed, to document the low frequency and fluctuating hearing loss over time.
The study's main finding is that although the teachers regarded themselves as being at low risk from their music-related noise exposure, the audiograms from 13 of 27 participants showed hearing loss.
Also included are two objective test methods for identifying outer hair cell changes and predicting audiogram changes using distortion-product otoacoustic emissions (DPOAEs).
The best measure of your hearing is an audiogram, which measures the ability to detect sounds at various frequencies.
Initially, 76% reported excellent or good hearing, but after formal audiogram hearing tests, her team found that 42% of those workers actually had measurable hearing loss.
In pure tone audiogram there was mild conductive type of hearing loss.
The acoustic threshold measured 1 hour after acoustic trauma was elevated in the control group to 70-90 dB in the higher frequencies of the compound action potential audiogram, with a maximum threshold elevation ranging between 12 and 16 kHz.