Disorders of the ear and eye Flashcards
what causes conductive hearing loss?
outer ear obstruction
tympanic membrane perf
middle ear problems e.g effusion, otosclerosis, ossicular erosion
what causes sensorineural hearing loss?
trauma infection noise induced degenerative neoplastic menieres
What would be found on rinnes test in conductive and sensorineural hearing loss?
bone conduction louder than air in conductive
Sensorineural air is longer
What would be found on webers test in conductive and sensorineural hearing loss
in conductive sound lateralises to impaired air and in sensorineural it lateralises to good ear
We Create Better Students (worst in conductive, best in Sensorineural
what are the S&S of Benign Paroxysmal Positional Vertigo (BPPV)?
Dizziness. A sense that you or your surroundings are spinning or moving (vertigo) A loss of balance or unsteadiness. Nausea. Vomiting
how can BPPV be clinically tested for?
Hallpike manoeuvre
- sit patient up and stanfd behind
- tilt head to 45 degrees
- secure head and lie them down rapidly so head is 30 degrees below bed and looking at floor
- BPPV diagnosed when nstagmus is latent, transient and fatiguable
what manoeuvre can be done to alleviate BPPV?
Epleys manoeuvre
how can vertigo be medically managed?
Anticholinergics e.g hyoscine patch Antihistamine e.g cyclazine Phenothiazines Benzos Anti emetics
My aunty (anti) had vertigo
what are the symptoms of menieres?
recurrent vertigo, vomiting, tinnitus, ear fullness and fluctuating hearing loss
how is menieres managed?
Betahistine
diuretics
Grommett insertion
what are the S&S of cataracts?
Painless vision loss
commonly starts with problem reading or watching TV
Worse in bright lights
Decreased visual acuity
decreased red reflex on ophthalmoscopy
cloudy brown/white lens
what are the S&S of glaucoma?
eye pain halos around lights N&V eye redness decreased visual acuity corneal oedema fixed dilated pupil
what is the treatment of glaucoma?
B blockers
Alpha agonists
prostaglandin analogues
carbonic anhydrase inhibitors - acetazolamide
what the S&S of ARMD?
progressive loss of central vision
decreased contrast and colour detection
flashing lights
distortion of straight lines
what are the invesigations for ARMD?
amsler grid
OCT - fluid and loss of retinal pigment epithelium