ENT Flashcards
sx of acute diffuse otitis externs
fever
lymphadenopathy
diffuse swelling
variable pain, pruritus
pain on moving ear and jaw
impaired hearing
how do you manage acute otitis externaal
topical antibiotics SOFRADEX + topical steroid
Oral Fluclox or Gent if severe
why are children more likely to have otitis media
short horizontal and poorly functioning eustachian tubes
who is otitis media most common in
youong children,
male
cleft palate
downs
how does otitis media present
pain in the ear and fever
may have reduction in hearing
hat causes otitis media
a VIRAL infection whhich swells the eustachian tube
this blocks the middle ear fluid drainage
how do you manage otitis media
Oral amox 5 days if:
- more than 4 days of sx
- less than 2 yo and bilateral
- 1 perforation / discharge in canal
otherwise consider delayed / no prescription
what is a choleasteatoma
abnormal skin growth / cyst of epithelium in the middle ear
what causes choleasteatoma
congenital
due to perforation in chronic suppurative OM
sx choleasteatoma
EAR DISCHARGE (foul smelling white discharge)
OR
conductive hearing loss
may also have headache, pain, verttigo, facial paralysis
Who should you suspect choleasteatoma in
anyone with unexplained unilateral ear discharge not repsonsive to abx
how do you ix cholesteatoma
Otoscopy
or CT
how do you manage choleasteatoma
refer to ENT for surgery
what is tintinnus
sensation of sound WITHOUT external sound
causes of tintinnus
Vestibular system:
- menieres
- otosclerosis
Brain:
- acoustic neuromoaa
- head injury
General:
- noise induced
- presbycusis
drugs
- aspirin
- aminoglycosides
- loop diuretics
differentials for vertigvo
vestibular:
- menieres
- BPPV
- labirinthitis
Central:
- acoustic neuroma
- MS
- stroke
- head injury
- inner ear syphilis
Drugs:
- gentamicin
- loop diuretics
- metronidazole
- co-trimoxazole
what does Romberg +ve indicate?
vestibular or proprioceptive disorder
what is menieres diseasee
dilatation of endolymph spaces due to increaaed lymph fluid
how does menieres prsent
CLUSTERED ATTACKS
last <12h
aurala fullness / pressure
vertigo, NV, nystagmus
tintinnus
what ix for meenieres
audiometry,
mx menieres
cyclizine (to treat emesis)
betahistine (to treat vertfgo)
surgical : use grommets to give gentamicin; saccus decompression
vestibular neuronitis history
following a febrl history (URTI)
sudden vertigo and vomiting
exacerbated by eye movements
NO HEARING LOSS
what s the difference between vestibular neuronitis and labirinthitis
vestibular neuronitis : NO HEARING LOSS
labirinthitis: hearing loss
how do you manage vestibular neuronitis and labiritinthis
prochlorperazine
which maneuvre confirms BPPV?
Dix-Hallpike
which maneuvre treats BPPV
Epley maneuvre
causes of hearing loss in adults
Conductive (between auricle and round window)
- external ear obstruction (wax)
- TM perforation (trauma, infection)
- Ossicle defect (otosclerosis)
sensorineural (defect in cochlea, cochlear nerve or brain)
- Drugs (aminoglycosides, vancomycin)
- Infective (meningitis, measles, mumps, herpes)
- menieres, trauma, MS; CPA lesion, low B12
what is an acoustic neuroma
benign slow growing tumour of superior vestibular nerve
what condition is acoustic neuroma associated with
NF2
sx acoustic neuroma
slow onset unilateral SNHL
tintinnus
vertigo
headache
CN palsy (5,7,8)
cerebellar signs
ix acoustic neutroma
MRI