Otology Flashcards
List the components of the external ear.
Pinna
Ear canal
List the components of the middle ear.
Tympanic membrane
Ear ossicles
List the components of the inner ear.
Semi-circular canals
Cochlea
Name the three ossicles of the middle ear.
Malleus
Incus
Stapes
Otalgia?
Ear pain
What should be asked about hearing loss?
Gradual or sudden
Unilateral bilateral
What should be asked about tinnitus?
Type of noise e.g. whooshing, ringing, buzzing.
What can otalgia be associated with?
Fever
Infection
Earache
Do chronic or acute conditions usually cause earache?
Acute
Which type of cancer could cause earache?
Tonsillar cancer
->especially something to be aware of if an elderly patient presents with earache.
Which skin condition can cause ear infections?
Eczema
Which instrument is used to examine the ear?
Otoscope
What would you see in a normal tympanic membrane?
Light reflection
In people with normal hearing, what is better- air conduction or bone conduction?
Air conduction
Name a situation where bone conduction may be better than air conduction
If there has been a perforation
If a patient has wax in the ear, what should be done?
If causing symptoms, it can be removed.
If not, will clear on it’s own.
If a patient is going to get wax removed, what can be done first?
Olive oil/almond oil ear drops to thin the wax
What can be done if there is no improvement of ear wax after using ear drops?
Ear Irrigation
If a patient has bleeding in the ear after trauma, e.g. RTA, what may be the cause?
Base line fracture of skull
Name some inorganic foreign bodies.
Beads, plastic material
Name some organic foreign bodies.
Cotton buds
Nuts
Which type of foreign body can cause more damage?
Organic foreign bodies-> can cause excoriation of skin and lead to otitis media in some cases.
What should be done in the cases of foreign bodies?
Should be removed, quicker if organic FB
What should be done in the cases of penetrating trauma to ear?
Do not prod, leave it and review in six weeks
What is the treatment for acute otitis externa?
Topical antibiotics
NO WATER IN EAR
-Sofradex
-Gentisone HC ear drops
Otomize spray
If patient has history of ear infections, which medication should not be given and why?
Aminoglycosides as can cause sensory neural hearing loss
What should be used in the treatment of acute otitis externa if the tympanic membrane is perforated or not visible?
Cilodex- combo of Ciprofloxacin and dexamethasone
Your patient with otitis externa ignores advice and goes swimming.
The ear becomes swollen so you can hardly see the ear canal and secretions cannot come out of the ear, causing a lot of pain.
What can be done?
Use a Pope Wick, a small tampon, to put through the small slit and add drops to keep the ear canal open and stop it collapsing. ALso can put ear drops using this Pope Wick
What may happen is otitis externa gets even worse after the ear canal has closed?
May develop into cellulitis
What should be done with someone with cellulitis of the ear?
Admit to hospital
IV antibiotics
Topic antibiotics
A patient presents with itchy ears after coming back from holiday. The patient swam a lot on this holiday.
What is the likely problem?
Fungal infection of ear
Therefore, which patients are more likely to get fungal infections in their ear?
Those with chronically wet ears
What is the treatment for fungal otitis externa?
Keep ears dry
Topical clopizadrole or nystatin ear drops
A 65yr old patient presents with six weeks of ear ache and ear discharge. His GP prescribed topical antibiotics which have not helped.
What may be the cause?
Malignancy- necrotising otitis externa
In which patients may necrotising otitis externa be seen?
Elderly, immunosuppressed, diabetic
What else may a patient with necrotising otitis externa present with?
Facial nerve palsies
Which organism commonly causes necrotising otitis externa?
Pseudomonas
What is the drug of choice to treat against Pseudomonas?
Ciprofloxacin
Which tests should be done in someone with suspected necrotising otitis externa?
Swab
Fasting blood sugar- diabetic patients
CRP
What is the management for someone with necrotising otitis externa?
Immediate referral to ENT
Systemic anti-pseudomonas antibiotics
Control of diabetes
Possibly surgery
What are exostoses?
Multiple swellings of the ear due to body overgrowths in the ear canal
What is the management for exostoses?
If doesn’t affect hearing, nothing.
Some people have surgery to widen ear canal or remove the exostoses.
What is an ear osteoma?
Benign wound tumour, bony lesion
What is the treatment of an osteoma?
Nothing, can leave it in most cases
What would be done if you suspect otitis media with effusion (glue ear)?
Audiogram to confirm diagnosis
What is the treatment for otitis media with effusion if it doesn’t go away on it’s own?
Grommet insertion
A patient comes in with recurring discharge in the ear. He has had previous grommet insertions and upon examination, the eardrum is not intact. There has been perforation of the tympanic membrane.
What could this be?
Chronic otitis media with perforation in active state
Which drug would be given in treatment of tympanic membrane perforation?
Cilodex
After 2 weeks on Cilodex, and a patient still has discharge, what would you do?
Refer to ENT
What may be done if ear discharge persists?
Myringoplasty, a type of surgery
What may occur if a patient has had previous grommet insertions and has no symptoms but upon examination, the ear looks abnormal?
Tympanosclerosis- scarring of the ear drum…nothing needs to be done
What is cholesteatoma?
Abnormal collection of skin cells within the ear
What can happen in those with chronic otitis media with cholesteatoma?
Can eat away at the ossicles and cause balance issues.
What is the treatment for those with chronic otitis media with cholesteatoma?
Temporal mastoid surgery
If a patient had retraction of the tympanic membrane, which structure of the ear is altered?
Eustachian tube problems
A child is referred to you from the GP. The GP says she has swelling over the mastoid bone, severe pain and fever.
What could this be?
Acute mastoiditis
What happens if acute mastoiditis is not treated?
Will form brain abscess.
Which imagery investigation is done to confirm acute mastoiditis?
CT
Which vitamin deficiency can cause BPPV (benign paroxysmal positional vertigo).
Vitamin D deficiency
What is the treatment for BPPV?
Epley manoeuvre
How is BPPV diagnosed?
Using Dix-Hallpike manoeuvre
A 45yr F has had 7 episodes of vertigo lasting 20m-1hr. Has tinnitus and h/o migraine. She difficulty using the phone on the right side (struggles to hear).
What is the diagnosis?
Meniere’s disease
What is the treatment for Meniere’s Disease?
Betahistine (type of vasodilator)
Stemetil (anti-emetic)
What is the difference between the presentation of Meniere’s Disease and a migraine?
Migraine has no associated hearing loss
Migraine does cause vertigo and tinnitus.
Okay so…recap.
Which vertigo related condition lasts:
1. a few seconds
2. a few hours
3. a few days
?
- BPPV
- Meniere’s disease
- Vestibular neuritis
What are anti-emetic drugs?
Drugs used to treat nausea and vomiting
What is the treatment for Bell’s Palsy?
Steroids
What causes Ramsay-Hunt syndrome?
Herpes zoster virus (varicella zoster)
What can cause Bell’s Palsy?
Herpes simplex virus
Which condition would need antiviral medication; Ramsey-Hunt syndrome or Bell’s Palsy?
Ramsay-Hunt syndrome