In Bing test, on alternately compressing and releasing the external acoustic meatus, the sound increases and decreases. This indicates
Correct Answer: Sensorineural deafness
Description: Tests for bone conduction TestPrincipleMethodImpressionBing test Examines the effect of occlusion of ear canal on hearing Tuning fork placed on mastoid while examiner alternatively closes & opens the ear canal by pressing on the tragus inwards Patient hears louder when the ear canal is occluded & softer when the ear canal is open - Normal persons or sensorineural deafness ( Bing + ve )No change in ear canal opening or occlusion - conductive deafness ( Bing - ve )Gelle's test Examines the effect of increased air pressure in ear canal on hearing Placing a vibrating fork on mastoid while changes in air pressure in the ear canal are brought about by Siegel&;s speculum Positive - normal persons or sensorineural deafnessNegative - ossicular chain fixed or disconnected(Refer: PL Dhingra, Textbook of Ear, Nose, Throat, 6thedition, pg no: 21,22,23)
Category:
Pathology
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