Tuning fork tests
-
Upload
peace10136 -
Category
Health & Medicine
-
view
291 -
download
1
description
Transcript of Tuning fork tests
![Page 1: Tuning fork tests](https://reader035.fdocuments.in/reader035/viewer/2022081512/5591aa9c1a28ab566b8b462d/html5/thumbnails/1.jpg)
Tuning Fork Tests
![Page 2: Tuning fork tests](https://reader035.fdocuments.in/reader035/viewer/2022081512/5591aa9c1a28ab566b8b462d/html5/thumbnails/2.jpg)
![Page 3: Tuning fork tests](https://reader035.fdocuments.in/reader035/viewer/2022081512/5591aa9c1a28ab566b8b462d/html5/thumbnails/3.jpg)
Tuning Forks in Use
• 128Hz, 256Hz, 512Hz, 1024Hz, 2048Hz, 4096Hz
• Lower frequency • Bone vibration
• Higher frequency• Shorter decay time
• Not preferred
![Page 4: Tuning fork tests](https://reader035.fdocuments.in/reader035/viewer/2022081512/5591aa9c1a28ab566b8b462d/html5/thumbnails/4.jpg)
![Page 5: Tuning fork tests](https://reader035.fdocuments.in/reader035/viewer/2022081512/5591aa9c1a28ab566b8b462d/html5/thumbnails/5.jpg)
Clinically Useful Tests
• Rinne Test
• Weber Test
• Absolute Bone Conduction (ABC) Test
• Schwabach’s Test
• Bing Test
• Gelle Test
![Page 6: Tuning fork tests](https://reader035.fdocuments.in/reader035/viewer/2022081512/5591aa9c1a28ab566b8b462d/html5/thumbnails/6.jpg)
Rinne Test
• AC compared with BC
• Positive• Normal
• Sensorineural deafness
• Negative• Conductuve deafness
• False Negative• Severe unilateral sensorineural deafness
![Page 7: Tuning fork tests](https://reader035.fdocuments.in/reader035/viewer/2022081512/5591aa9c1a28ab566b8b462d/html5/thumbnails/7.jpg)
![Page 8: Tuning fork tests](https://reader035.fdocuments.in/reader035/viewer/2022081512/5591aa9c1a28ab566b8b462d/html5/thumbnails/8.jpg)
Weber Test
• Normal• Heard equally in both ears
• Conductive Deafness• Lateralised to worse ear
• Sensorineural Deafness• Lateralised to better ear
![Page 9: Tuning fork tests](https://reader035.fdocuments.in/reader035/viewer/2022081512/5591aa9c1a28ab566b8b462d/html5/thumbnails/9.jpg)
![Page 10: Tuning fork tests](https://reader035.fdocuments.in/reader035/viewer/2022081512/5591aa9c1a28ab566b8b462d/html5/thumbnails/10.jpg)
Absolute Bone Conduction Test
• Patient’s BC compared with examiner’s BC
• Normal• Same duration
• Conductive Deafness• Same duration
• Sensorineural Deafness• Shorter duration
![Page 11: Tuning fork tests](https://reader035.fdocuments.in/reader035/viewer/2022081512/5591aa9c1a28ab566b8b462d/html5/thumbnails/11.jpg)
Schwabach’s Test
• Patient’s BC compared with examiner’s BC
• Normal• Same as examiner’s
• Conductive Deafness• Lengthened
• Sensorineural Deafness• Shortened
![Page 12: Tuning fork tests](https://reader035.fdocuments.in/reader035/viewer/2022081512/5591aa9c1a28ab566b8b462d/html5/thumbnails/12.jpg)
Bing Test
• Bone conduction
• Effect of occlusion of ear canal on hearing
• Positive• Normal
• Sensorineural deafness
• Negative• Conductive deafness
![Page 13: Tuning fork tests](https://reader035.fdocuments.in/reader035/viewer/2022081512/5591aa9c1a28ab566b8b462d/html5/thumbnails/13.jpg)
Gelle’s Test
Bone conduction
Effect of increased air pressure in ear canal on hearing
Positive Normal Sensorineural deafness
Negative Ossicular chain fixed or disconnected
![Page 14: Tuning fork tests](https://reader035.fdocuments.in/reader035/viewer/2022081512/5591aa9c1a28ab566b8b462d/html5/thumbnails/14.jpg)
Thank you