The 4th Family Medicine Review Course

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Presentation transcript:

The 4th Family Medicine Review Course

Audiograms & Tympanogram Dr Fareedah Alkandery R3 Family medicine Resident

L R A B O X < > Interpretation O – air conduction is a graph that shows the softest sounds a person can hear at different frequencies First line investigation that is done when patient complains of hearing difficulties. O – air conduction X – air conduction > - bone conduction < - bone conduction L R A B O X < >

Above 20dB = normal

TYPE SENSORINEURAL HEARING LOSS X < > SENSORINEURAL HEARING LOSS (Both air and bone conduction impaired) CONDUCTIVE HEARING LOSS (only air conduction impaired) MIXED HEARINH LOSS (both air and bone conduction impaired but air is worse) O X O X < >

NORMAL

Bilateral sensorineural

Left mixed hearing loss

Right conductive hearing loss

Tympanogram Shape of curve Ear canal volume Type A (NORMAL) has middle peak Type B (ABNORMAL) flat line Ear canal volume can vary and are age dependent, but typically range from 0.3mL to 0.9mL

TYPE A NORMAL

Volume high = perforation Volume normal = fluid

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