Ear and ENT Flashcards
anatomy of the ear
a normal tympanic membrane will have a light reflection on examination
you can see the handle of the malleus
a membrane in acute otitis media might look
opaque
inflamed
bulging
typical history of acute otitis media
acute onset of pain (may be difficult to tell in young children)
fever
concurrent URRTI symptoms common
treatment for acute otitis media
antibiotics ??
more likely to help in bilateral OM in age <2
recommended in aboriginal children due to high prevalence of complications
symptomatic management is reasonable in non-severe cases
analgesia
otitis media with effusion
persisting middle ear effusion, follows acute otitis media or accompanies rhinitis/sinusitis
best confirmed by pneumotoscopy or tympanometry
painless, sometimes causes hearing loss
often resolves spontaneously within <3 months
when is hearing testing needed
if persists >3 months
when is ENT consult needed
bilateral hearing loss >30dB or
speech delay, educational impairment or behavioural difficulties
grommets are also called
tympanovstomy tubes
ventilation tubes
a grommet is
a small plastic tube, narrower in its middle than its ends
inserted surgically to maintain a hole in the tympanum
main indicators for grommet are
recurrent otitis media
otitis media with effusion
possible adverse effects of grommets
anaesthetic risks, ear discharge, persisting perforation, tympanosclerosis
chronic suppurative otitis media
chronic bacterial infection of the middle ear with persistent drainage of mucous from the middle ear via perforation
chronic suppurative otitis media may occur following
acute otitis media
chronic suppurative otitis media is especially common in
resource poor settings internationally
in remote aboriginal communities
chronic suppurative otitis media is an important cause of
conductive hearing loss
treatment of chronic suppurative otitis media
ear cleaning (aural toilet) - dry mopping with tissue spears or dilute butadiene washout
topical antibiotic
what sort of antibiotic is best for chronic suppurative otitis media
topical antibiotics are better
best evidence is for fluroquinolones which are also not ototoxic (unlike some other topical antibiotics)
perforation
may follow otitis media or trauma
often causes some hearing loss depending on extent of perforation
perforation prognosis
often heals spontaneously in absence of infection, especially in childhood
treatment for persistent perforation
tympanoplasty is a surgical option
involves grafting other tissue over the perforation
cholesteatoma
beware the attic perforation (perforation should always be at the bottom)
not actually a malignancy
expanding mass of keratinising squamous epithelium
potentially locally destructive including to ossicular chain
can lead to permanent hearing loss or vertigo
needs surgery
treatment for cholesteatoma
needs surgery - only option