click below
click below
Normal Size Small Size show me how
ear assessment
N411
Question | Answer |
---|---|
Middle ear | consist of malleus, Incus, Stapes |
Functions of the middle ear | conduct sound vibrations from outer to inner ear, protect inner ear by reducing amplified loud sounds, eustachian tube equalized atmospheric pressure |
Inner ear | contains semicircular canals, cochlea, distal end of 8th cranial nerve, maintains balance or equilibrium |
Conductive hearing loss | caused by any physical obstruction to the transmission of sound waves |
sensorineural hearing loss | caused by a defect in the cochlea, 8th cranial nerve, or the brain itself |
Weber's test | tuning fork on clients head, midline forehead or upper lip over teeth. normal hearing is in both ears. if heard louder in 1 ear =conductive hearing loss/lower in other ear= sensorineural loss |
Rinne's test | compares air conduction and bone conduction, air conduction 2-3x longer, fork is placed on mastoid process say when you stop hearing fork, then put by ear-should still hear it by ear |
otosclerosis | disease of the labryinathe capsule of middle ear, resulting in bony overgrowth of tissue, causes growth of new bone formation. |
stapes fixation leads to | conductive hearing loss in otosclerosis |
if otosclerosis is in inner ear | sensorineural hearing loss is present |
fenestration | removal of stapes, with small hole drilled in footplate, a prosthesis connected btween incus and footplate, complications= vertigo, infection,, facial nerve damage |
meniere's disease | endolymphatic hydrops, dilation of the endolymphatic system by overproduction or decreased reabsorption of endolymphatic fluid |
Meneire's disese | characterized by tinnitus, sensorineural hearing loss and vertigo, feelings of fullness in the ear, N&V, nystagmus |
Schwartze's sign | pinkish discoloration of the tympanic membarane which indicates vascular changes in the ear. found in otosclerosis |