Question
Diagnose the condition from the Audiogram given below
A. Sensorineural Hearing loss
B. Conductive Hearing loss
C. Mixed Hearing loss
D. Central hearing loss
Show Answer
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Correct Answer » A
Explanation
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Ans;A. Sensorineural Hearing loss
The image is of a Pure Tone Audiogram showing Sensorineural Hearing loss
PURE TONE AUDIOMETRY
- Pure tone audiometry is a subjective test used in the assessment of hearing
- The test can provide both bone and air conduction threshold.
- The frequency range tested includes 250Hz to 8kHz.
- There is also high frequency Pure Tone Audiometry covering the frequency range above 8000hz to 16,000hz,specifically for ototoxicity monitoring,
- The threshold of lower limit of normal is considered to be 20dB.
- Pure-tone average (PTA) is the average of hearing sensitivity at 500, 1000, and 2000 Hz.
Conductive loss
- BC better than AC with air bonegap. Greater the air-bone gap, more is the CHL
- Loss is not more than 60 dB
Sensorineural loss
- BC and AC both are reduced.
- More often involving high frequencies
- No air-bone gap
- Difficulty in hearing in the presence of noise
- Loss may exceed 60 dB
