Flashcards in EENT Deck (44):
List the common Ear conditions?
List the common Nose conditions?
List the common throat and mouth conditions?
Oral manifestations of drug reactions
-any sound perceived in the absence of external stimulus
-Not a disease, it is a symptom
-up to 10% people have mild tinnitus all the time
-can occur at any age however it is more prevalent in the elderly
-men > women
-usually bilateral presentation (sometimes unilateral= more serious)
-usually subjective (can be objective but this is more serious)
-Usually continuous (can also be pulsatile)
What is subjective tinnitus?
presbycusis (age related)
-disorder within the ear
-head or neck injury
What is objective tinnitus?
-referal to ENT specialist
-vascular abnormalities such as turbulent blood flow
physical: arteriovenous shunts
How is tinnitus diagnosed?
-exclude other treatable causes
1)full bull count
2)thyroid function test
4)treat otitis media with effusion (OME)
-external causes e.g. environmental noise
-visual examination of ear
what are the non-pharmacological treatment methods for tinnitus?
-treat/manage any underlying cause
-correct hearing loss
-sound therapy: environmental sound generators
-tinnitus retraining therapy: counselling and sound therapy
What are the pharmacological treatment methods for tinnitus?
Tricyclic antidepressants- limited evidence, adverse effects, only use if patient also has depression.
Hypnotics- may be used short term in insomnia, caution withdrawal may aggravate tinnitus
Anticonvulsants e.g. gabapentin- no evidence of strong benefit, possible placebo effect
Gingko biloba- no reliable evidence
Lignocaine- Intratympanic injection offers relief for 2 to 3 hours
An abnormal sensation of rotary movement associated with difficulty in balance, gait and navigation of the environment arising from fluid abnormalities in the vestibular apparatus'
Not synonymous with dizziness or acrophobia
what is the prevalence of vertigo?
more common in elderly + migraine sufferers
could affect up to 25%
What are the associated symptoms of vertigo?
Nausea and vomiting
What are the classifications of vertigo?
peripheral- disorder of the inner ear or eighth cranial nerve
Central- disorder of brain-stem or cerebellum
what are the causes of peripheral vertigo?
benign paroxysmal positional vertigo: otoconia
-more common in females
Infection/ inflammation- nausea
Acoustic neuroma (sometimes central)
what are the causes of Central vertigo?
2)Stroke or transient ischaemic heart attack
4)Tumour, benign or non-benign
what are the non pharmacological treatment methods for vertigo?
Vestibular rehabilitation exercises
what are the symptom management methods for acute vertigo (not bppv)?
-immediate relief if vomiting: prochlorperazine 3-6mg bd buccal or 12.5mg IM
-3-7 days acute treatment then prn
*prochlorperazine 5mg tid
*severe symtpoms 10mg tid then reduce dose
*side effects: sedation, extrapyramidal effects, antimuscarinic effects
1st generation antihistamines
-cinnarizine 30mg tid or cyclizine 50mg tid or promethiazine 25mg tid
*side effects are sedation and antimuscarinic effects
Advise patient to stop when attack is over
vestibular neuronitis- max 3 days treatment
which patients should you take care with when using pharmacological agents to treat vertigo?
-Glaucoma (esp. sedating)
-Prostatic hypertrophy (esp. sedating)
-Urinary retention (esp. sedating)
what are some prophylactic ,measures that can be taken for people suffering from vertigo?
-restrict salt and fluid intake
-stop smoking and restrict excess coffee and alcohol
how long does a menieres disease acute attack last? and how often do they happen?
acute episodes occur in clusters of about 6-11 per year
what is the prevalence of menieres disease?
13.1 per 100,000
women > men
how is a diagnosis of menieres achieved?
-at least 2 episodes of vertigo lasting at least 20 minutes
-tinnitus and/or aural fullness
what is the prognosis of menieres disease?
-fluctuation of symptoms
-spontaneous resolution over 5-15 years
what is menieres disease?
backed up fluid in the endolymphatic sac resulting in distorted balance and sound information.
What are the potential risk factors for menieres disease?
morbidity factors in menieres disease?
-slips and falls
-progressive and potentially permanent loss of hearing
what are the pharmaceutical treatment methods for treating menieres disease?
-alleviate acute attacks: prochlorperazine or 1st gen antihistamines as per vertigo treatment
advise patient to stop treatment when attack is over
-prevention of recurrent attacks:
betahistine 16mg tid initially
some patients may use reduced dose subsequently: 8mg tid
6-12 months to prevent attack
then consider withdrawal
adverse effects = headache, GI distubances, rash and pruritis
ablates the vestibular end organ
1-2 injections 1 month apart
risk of hearing loss
limited evidence- improvement in frequency and severity of vertigo after 24 months
What is some self care advice given to patients with menieres disease?
-sit or lie down imeediately if dizzy
-(bed) rest during attacks
-Move around after attack to compensate
-be aware of risk of falling
-consider risks associated with everyday life such as driving/ladders/machinery/sports and swimming
-low salt diet and avoid alcohol, caffeine and nicotine
what is ototoxicity?
damage to the hearing or balance functions of the ear by drugs or chemicals
is ototoxic hearing impairment reversible?
YES when medicine is stopped
what affects ototoxicity?
discuss aminoglycoside ototoxicity?
Irreversible, inc. vestibular and auditory damage, may occur at normal dose
discuss macrolide antibiotic ototoxicity?
reversible hearing loss with or without tinnitus after high IV dose
discuss loop diuretic ototoxicity?
reversible/irreversible. tinnitus and deafness may occur after RAPID HIGH DOSE IV ADMINISTRATION and in renal impairment.
Potentiate ototoxic drugs (caution with aminoglycosides)
Discuss NSAIDs, aspirin ototoxicity
often reversible, tinnitus, associated with toxic doses and/or long term use
Discuss chloroquine ototoxicity?
Reversible hearing loss, tinnitus, risk mainly with parenteral use
discuss chemotherapeutic agent e.g. cisplatin ototoxicity?
usually irreversible hearing loss and tinnitus due to cochlear damage
Discuss topical antiseptic ototoxicity?
damage can occur if ear perforated
What are the ototoxicity methods of prevention?
-smallest effective dose, according to patient weight, for shortest time possible
-administer IV infusions at correct rate
-measure hearing before,during and after therapy
-decrease dose in renal disease
-keep patient well hydrated
-patients with pre-existing sensorineural damage will be more vulnerable
What are nasal polyps?
Pale bags of benign oedematous tissue
Bilateral (unilateral more serious)
more common >40(rare <10)
Men > women (2:1), 2-4% of population
can be associated with allergy and infection
Asthma- 20-40% patients with polyps have asthma
cystic fibrosis (1 in 2)
what are the symptoms of nasal polyps?
-runny nose/sneezing (50%)
-poor olfactory abilities (hyposmia, anosmia)
-altered sense of taste
-catarrh/post nasal drip
-feeling of pressure in the face
-large polyps (headaches, snoring, sleep apnoea)
what are the pharmaceutical treatments for nasal polyps?
corticosteroids reduce the size and growth of inflammatory polyps
-topical (drops 1st then spray)
*mometasone 50mcg- 2 sprays once a day
*budesonide 64mcg- 1 spray twice a day
*delay in response
*often requires maintenance dose
*prednisolone 5-30mg in the morning (1-2week course) followed by topical treatment
*shrinks large polyps faster
Discuss the use of surgery to remove nasal polyps?
-polyps return in 3 out of 4 patients
-long term use of steroid nasal spray will usually be recommended after surgery to help stop polyps returning quickly