Ear-ENT Flashcards
whisper
30dB
conversation
60dB
shouting
90dB
rhinophyma
hypertrophy of sebaceous glands; un treated rosacea
oral cavity 7 parts:
- lips
- gingiva
- floor of mouth
- anterior 2/3 tongue
- buccal mucosa
- hard palate
- retromolar trigone
oropharynx 5 parts:
- soft palate
- tonsils
- base of tongue
- posterior pharynx
- lateral pharynx
age for visual response audiometry/ distraction testing
less than 4 years old
flat tympanometry, kids
otitis media
perforation
OAE=
oto-acoustic emission
SCREENING IN KIDS
BSER=
brain stem evoked response
OBJECTIVE IN KIDS, GA
external ear causes–> CHL
- wax
- otitis externa
- atresia
middle ear causes–> CHL
- otitis media
- tympanic mem perforation
- ossicular discontinuity
- otosclerosis
- cholesteatoma
- glomus tumor
PC otosclerosis
tinnitus
CHL–> SNHL
UNI–> BI
risk factors for otosclerosis
female
pregnant
20-30yo
FAMILY HX
tx of otosclerosis
hearing aid
stapedectomy
problem in otosclerosis
fixation of stapes foot plate by immature new bone
MCC sudden SNHL
IDIOPATHIC
causes of sudden SNHL
ii-tt-an idiopathic infection- mumps/measles/TB/ syphilis trauma- surgery, base of skull fracture tumor- vesticular schwannoma autoimmune- wegners neuro- MS
tx of SNHL
underlying causes…
STEROIDS
CARBOGEN
differential gradual bilateral SNHL
- noise induced
- presbycussis
- ototoxic drugs
noise induced gradual SNHL
- cisplatin
- furosemide
- aminoglycosides
- erythromycin
- vancomycin
- aspirin
reversible ototoxic drug
ASPIRIN
irreversible ototoxic drug
CISPLATIN
1 macrloide= ototoxic
erythromycin
frequency for noise induced
4000– 500-2000Hz
audiogram for conductive hearing loss
AIR-BONE GAP
audiogram for SNHL
NO air-bone gap
mcc hearing loss in kids
serrous otitis media= glue ear
5 risk factors for serious otitis media
- congenital
- second hand smoke
- large adenoids
- nasal allergy
- cleft palate
protective for serrous otitis media
BREAST FEEDING
5 complications of serrous otitis media
- atelectasis
- retraction pockets
- tympanosclerosis
- ossicle erosion
- cholesteatoma
tx criteria for serrous otitis media
RECURRENT otitis media OR > 3 months
how long do grommets stay in for serrous otitis media
9-12months
3 complications with grommets
- 50%= discharge
- hole in tymp mem
- tympanosclerosis
causes of tympanosclerosis
- serrous otitis media
- grommets
- RECURRENT ACUTE OTITIS MEDIA
tympanosclerosis
calcification/ hyaline degeneration of middle fibrous layer of tympanic membrane
when to refer acute otitis media
- NON-resolving
- complications
1. CN7
2. chronic= persistent discharge
3. acute mastoiditis
4 things for tx acute otitis media
- decongestant
- Abx– bacterial
- antipyretics
- analgesics
definition acute mastoiditis
subperiosteal abscess with empyema in mastod
extra for PC acute mastoiditis
Protruding Pinna
post auricular swelling
BLUNTING OF SULCUS
2 complications of acute mastoiditis
- abscess
- extradural temporal lobe
- subdural - meningitis
tx acute mastoiditis
- abx IV
- grommets
- MASTOIDECTOMY
chronic otitis media definition
persistent discharging > 3/12, with non-intact tympanic membrane; PAINLESS – otorrhea/ hearing loss
safe chronic otitis media
tubotympanic
unsafe chronic otitis media
atticoantral—> cholesteatoma
tx of chronic otitis media
- topical abx
- aural toilet
- tympanoplasty/ mastoidectomy
things that can lead to ossicle erosion; thus going from CHL–> SNHL
- otosclerosis
- serrous otitis media
- cholesteatoma
2 intra-cranial complications of cholesteatoma
- MENINGITIS
2. ABSCESS– intracranial/extradural/subdural
2 inner ear complications of cholesteatoma
- VERTIGO– semicircular canals
2. SNHL– cochlea
2 middle ear complications of cholesteatoma
- CHL
2. CN7 palsy
2 vascular complications of cholesteatoma
- internal jugular vein thrombophlebitis
2. sigmoid sinus thrombosis
tx cholesteatoma
MASTOIDECTOMY
otoscopy for glue ear=
DULL and RETRACTED
PC otitis externa
PAIN otorrhea ITCHYNESS red oedematous skin debris
otoscopy otitis externa
NORMAL- TM and mobile
tx otitis externa
- topical: Abx and steroid
- analgesia
- otowick
- canal toilet
complications of otitis externa
perichondritis
malignant otitic extern
malignant otitis externa
severe osteomyelitis of temporal bone–> granulation tissue
= grnaulomatous polypoid otitis externa
2 risk factors for malignant otitis externa
DM
CN7
PC malignant otitis externa
PAIN OUT OF PROPORTION
CN palsies: 7, 9-12
tx malignant otitis externa
- topical antibiotic
- IV antibiotic- 6 weeks
- aural toilet
when to refer otitis externa
- non-resolving
- complications– malignant
- oedematous canal
- aural toilet
causes of otitis externa
- FB/ water/ cotton bud
- DM
- infection- Pseudomonas, S.aureus, proteus, fungal
- Skin- eczema, psoriasis, dermatitis
- earl canal stenosis
diagnosis of acute mastoiditis
URGENT CT with CONTRAST
–> brain abscess and subperiosteal abscess