AND MIDDLE
EAR DISEASES
,EUSTACHIAN TUBE
Assessment of functions of Eustachian tube
, FUNCTIONS
1. Ventilation and regulation of middle ear pressure
2. Protection against
- nasopharyngeal sound pressure
- reflux of nasopharyngeal secretions
3. Clearance of middle ear secretions
02
, ET FUNCTION TESTS
Valsalva test
Politzer test
Catheterization
Toynbee's test
Tympanometry
Radiological test
Saccharine or methylene blue test
Sonotubometry
03