ENT Flashcards
3 regions of the nasal cavity
vestibule
resp
olfactory
turbinates and meatus
turbinates are bony
meatus are the air spaces
3 structures of nasal septum
vomer
perpendicualr plate of ethmoid
septal cartilage
choana
link between nasal cavity and naso-pharynx
vascular supply to nasala cavity
- anterior/ posterior ethmoidal arteries (ophthalmic arteries)= superior
- sphenopalatine (maxillary artery)- external carotid artery
- greater palatine (maxillary artery)
- superior labial (facial artery)
- converge in anterior septum= little’s area/ kesselbachs plexus
o prone to nose bleeds as anastomosis
drainage of 4 sinuses
maxillary= into middle meatus into floor of semi lunar hiatus
sphenoid into spheno-ethmoidal recess
frontal also into semi lunar hiatus through frontonasal duct
ethmoid
Anterior – Hiatus semilunaris middle meatus
Middle – Ethmoid bulla
Posterior – Superior meatus
oral cavity boundaries
- anterior oral fissure
- posterior oropharyngeal isthmus
- lateral wall buccinator
- roof hard and soft palates
- floor tongue and muscular diaphragm
salivary glands
parotid
submandibular
sublingual
pharynx
nasopharynx
oropharynx
laryngopharynx
what is waldever’s ring
tonsil formation protects things from entering the pharynx -pharyngeal tonsil -palatine tonsil -lingual tonsil
weber test
normal
conductive
sensorineural results
place in centre of patient forehead
- normal is to hear it central
- noise is louder in the ear with conductive deafness
- in symmetrical hearing loss it is still heard in the middle
- in unilateral sensorineural deafness the sound is heard better in the better hearing ear
lateralises to conductive hearing loss
lateralises away from sensorineural hearing loss
types of hearing loss
sensorineural
conductive
Rinne test how to do
vibrate and place the tuning fork at the base behind the ear
- ask if they can hear it and then to indicate when they can no longer hear the sound
- when they say they cant hear it place the still vibrating prongs 2cm away from the external auditory meatus and ask if they can still hear it now
rinne test meaning
- air conduction is better than bone conduction normally
- if bone conduction is louder than air conduction this is BC>AC and rinne negative- suggesting conductive deafness
dix hallpike positional testing
- sit patient upright
- turn head to 45 degrees
- rapidly lower them so head is 30 degrees below horizontal
- need to keep eyes open to look for nystagmus
- repeat with head facing the other way
abnormal hallpike
-bppv vs central pathology
- in BPPV there is a delay of up to 20 seconds before the patient experiences vertigo and rotational jerk nystagmus towards the lower ear
- in central pathology there is an immediate nystagmus and not necessarily vertigo and does not adapt (ie doesn’t lessen with fatigue)
examination for Ears nose and throat-
-otoscope- ears and nose
-nasendoscopy-nose
-rhinometry= peak nasal flow
rhinomanometry
-ciliary function
ENT blood tests
autoimmune allergens RAST immunology- SPT, RAST skin prick test UPSIT scratch and sniff test
symptoms for ears 8
otalgia otorrhoea hearing loss tinnitus vertigo unsteadiness nystagmus itching
causes of otalgia 7
acute otitis media or externa referred from pharyngitis, trauma, cancer perichonditis herpes zoster- ramsay hunnt tonsillitis dental disease cervical spine disease
causes of itchy ear
otitis externa
otorrhoea purulent cause 2
eardrum perforation with infection
otitis externa
otorrhoea mucoid 2
eardrum perforation
severe trauma causing CSF leak
otorrhoea blood 2 causes
granulation tissue from infection
trauma
hearing loss conductive causes 7
wax otitis externa middle ear effusion trauma to tympanic membrane oteosclerosis chronic middle ear infection tumours
hearing loss sensorineural causes 6
genetic prenatal infection degenerative- presbyacusis occupation or noise induced acoustic neuroma idiopathic
tinnitus 2 causes
presbyacusis
noise damage
vertigo causes 5 peripherally
BPPV vestibular neuronitis drugs eg gentamicin and anticonvulsant meniere trauma
vertigo 3 central causes
- brainstem ischaemia or infarction
- migraine
- MS
mouth and throat symptoms 8
sore mouth sore throat stridor dysphonia dysphagia hallitosis trismus xerostomia-dry mouth
sore mouth causes 4
gingivitis- gum inflammation
apthous ulcers
unilateral painful vesicles on palate- herpes zoster
diffuse oral infection- candida
sore throat causes 7
viral pharyngitis acute tonsillitis infectious mononucleosis palatal petechiae peritonsillar abscess mass or ulcer globus pharyngeus
globus pharyngeus causes
anxiety
acid reflux
habitual throat clearing
types of stridor and indication
- inspiriatory- indicates narrowing at vocal cords
- biphasic indicates tracheal obstruction
- expiration suggests tracheobronchial obstruction
stertor
muffled hot potato speech
quinsy
dysphonia
disturbance of vocal cord function
dysphonia warning signs
> 3 weeks
with bovine cough and breathy dysphosia suggest lung cancer causing recurrent laryngeal palsy
causes of dysphonia
croup congenital URTI laryngitis trauma lung cancer vocal cord nodules neurological functional
dysphagia causes
pharyngitis
oseophageal disease
lumps causes
lymphadenopathy
halitosis causes
poor dental hygiene
trismus- cause and meaning
trismus is inability to open mouth fully
-quinsy and tetanus
odynophagia
pain on swallowing
xerostomia
dry mouth
anticholinergic syndrome / sjorgen
rhinology symptoms 6
-obstruction discharge sneeze and itch pain and pressure nasal deformity sense of smell disturbance
bilateral water rhinorrhoea suggests
-allergic or vasomotor rhinitis
purulent rhinorrhoea suggests
bacterial infection eg cold or localised sinus infection or foreign body
new onset unilateral crystal clear rhinorrhoea suggests
Head injury CSF leak
anosmia causes
complete loss of smell
- head injury with damage to the olfactory epithelium/ nerve
- can occur after viral URTI
- polyps
- swelling in allergic rhinitis
- severe mucosal oedema
cacosmia and cause
unpleasant smell
-chronic sepsis in nose or sinuses
parosmia
distorted sense of smell
nasal deformity causes 5
-trauma acne rosacea can cause rhinophyma -granulomatosis with polyangitis -congenital syphilis -cocaine
rhinophyma is
destruction of the nasal septum producing flattening of bridge and a saddle deformity
-large red bumpy nose
nasal pain causes
rare
trauma
facial pain causes
- temporomandibular joint dysfunction
- migraine
- dental
- sinusitits
- trigeminal neuralgia
trigeminal neuralgia
Trigeminal neuralgia is sudden, severe facial pain. It’s often described as a sharp shooting pain or like having an electric shock in the jaw, teeth or gums. It usually happens in short, unpredictable attacks that can last from a few seconds to about 2 minutes. The attacks stop as suddenly as they start.
external ear pathologies 15
- pinna haematoma
- other trauma
- pinna-microtia
- pre-auricular sinus
- pinna cellulitis
- skin neoplasis
- external auditory meatus block
- acute otitis externa
- malignant otitis externa/ osteomyelitis
- chronic otitis externa
- exostois
- furunculosis
- foreign body
- tympanosclerosis
- granular myringitis
pinna haematoma pathology
- perichondrium stripped off cartilage
- cartilage devascularised
- blood accumulates between perichondrium and cartilage
pinn haematoma cause
contact sport- rugby
pinna haematoma presentation
cauliflower ear
risk of pinna haematoma
- risk of necrosis
- risk of infection
- risk of deformity
management pinna haematoma
needs aspiration drainage and pressure for 24 hours
possible trauma to the ear
- blunt trauma
- head injuries risk of temporal # and hearing loss
- surgical trauma
passage of sound in ear
concha external auditory canal tympanic membrane ossicles- malleus, incus, stapes oval window cochlea cochlea nerve
A 62-year-old man presents with a sore throat and 6 kg unintentional weight loss. He has smoked 1 pack of cigarettes daily for the past 45 years and drank 1 bottle of whiskey daily for the past 5 years. On examination, there is a large left tonsillar mass extending to the soft palate, with no cervical adenopathy
OROPHAYNGEAL carcinoma
A 74-year-old man presents with an 8-week history of right sided otalgia. This is associated with a sore throat and odynophagia. He smokes 20 cigarettes every day and is known to be a heavy drinker. On examination of the ear, there are no abnormalities noted.
nasopharyngeal cancer
children difference in anatomy
obligate nasal breathers large T and A large occiput tall tight supraglottis short trachea diaphragmatic breathers sensitive to small changes in airway epiglottis more concave and folded
foreign body ear canal classifications
witnessed
unwitnessed- dont see but child tells you
missed- never tells you and dont see till later
type of things used to remove things from ears
jobson horne
synringing
crococile forceps
theatre if not successful
when would synringing be used
something dehydrated
when would crocidile forceps be used
paper but not circular
AOM children management
-can delay abx 48-72 hrs
give abx
-bilateral <2
-otorrhoea
admit and IV abx if
unwell child
neuro symptoms
masoiditis suspected
glue ear
otitis media with effusion
why do children get glue ear
eustachian tube immature
commonest cause of conductive hearing loss children
glue ear
presentation glue ear
can be asymptomatic recurrent otalgia poor listening skills indistinct speech or delayed language behaviour problems fluctuating hearing reucurrent ear infection balance problems
chronic OM dx
fluid present behind ear drum for 12 or more weks
tympanometry finding for middle ear effusion
flat trace
management of Glue ear - indication for surgical intervention
children with persistent bilateral OME over a period of 3 months with a hearing level in the better ear of 25-30 should be considered for surgical intervention
management options for glue ear
-surgical =grommet or ventilation tube- always wait 3 months
-abx
-antihistamines
decongestants
steroids
diet
hearing aids if contraindicated surgery
acute mastoiditis cause
-often preceded by AOM
as pus builds up in the mastoid bone it starts corroding out
presentation of acute mastoiditis
swollen behind ear can turn the ear inwards and forwards severe pain over mastoid process perforation can relieve the initial discomfort tachycardic and pyrexia
management of acute mastoiditis
admit IV abs and analgesia swabs if discharging CT scan if -neuro -systemic -baby and cant assess
surgical intervention-mastoidectomy
drainage
complications of acute mastoiditis
neurological
intra-cranial
temporal bones
systemic eg sepsis, thrombosis
unilateral smelly nasal discarge in a child
foreign body until proven otherwise
assessment of foreign body in child
rhinoscopy
parental kiss
types of nasal foreign bodies
witnessed, unwitnessed and missed
organic FB- need to remove in a week
inorganic FB- remove electively no risk
button batteries- remove immediately risk of erosion
management nasal foreign bodies
remove with jobson horne, wax hook, crocodile
theatre list
neonatal hearing assessment
OAE otoacoustic emission
epistaxis management in children
nasceptin first line 2 weeks 3xa a day
peri-orbital cellulitis presentation
swollen eye
proptosis
need to dermine if swelling just eyelid or in the globe
cause of peri-orbital cellulitis
from ethmoid sinus- pus travels to the orbit
complications peri-orbital cellulitis
visual problems
colour vision goes first
intracranial infections
management peri-orbital cellulitis
IV abx and nasal decongestants
CT scan- vision signs, >24hrs no improvement ,difficult to assess child
surgical drainage
pharyngeal abscess in a child presentation
unwell
torticollis
trisumus
management of pharyngeal abscess
hot tonsillectomy
drain abscess
retropharyngeal abscess presentation
drooling
dysphagia
theatre
presentation of atypical mycobacterial infections in a child
and RX
-cold abscesses with well child
need clarithromycin
if not settling surgical
tends to resolve by itself though
foreign body oesophagus management
admit
CXR
above lower oesophageal sphincter= rigid oesophagocsopcy and remove
below diaphragm= usrgeons
foreign body airway
theatre immediatly
bronchoscopy
short live xh of recurrent croup and chest infections
laryngomalacia
prominent few of birth often related to reflux inspiratory stridor tracheal tug costal recession pectus cavum thriving issues- surgical
paediatric acute rhinosinusitis presentation
nasal obstruction, discharge
and one of
frontal pain
cough
pinna haematoma pathology
perichondrium stripped off cartilage and devascularised get necorsis and deformity
-aspiration drainage same day ENT
pinna-microtia is
-due to an embryological defect
failure formation of ear
develops from 6 hillocks of his
spectrum of malformation- normal to abscence of EAM and pinna
management of microtia
speech and language development
surgical
prosthesis
hearing aids
pre-auricular sinus presentation and rx
-pit at root of helix- embryologicla remanant
no intervention require unless becomes infected
pus coming out
treat acute infection
surgical excision if recurrent infection
pinna cellulitis
needs IV antibiotics
complications of other infections
perichondritis spares lobe
can end up with necrosis
external auditory meatus blockage
-wax/ cerumen
conductive hearing loss
wax production
by ceruminous glands
management of wax blockage
- soften using almond/ olive oil, sodium bicarb
- syringe/ microsuction
when should syringing for wax not be done
if perforation risk of infection
assoc. conditions to acute OE
psoriasis
seb k
eczema
bacteria eg strep, staph, pseudomonous, fungi
presentation of acute OE
itch and pain minimal hearing loss red, eczematous swollen external auditory canal discharge pain on palpation of tragus
causes of acute OE
- post-trauma eg cotton buds
- frequent swimmers
- patients with eczema
treatment of acute OE
- cleaning- syringe suction
- topical steroids / antibiotics
- oral antibiotics if not settling and refer to ENT if not responding to topical
aural hydiene and keep dry
-ear wick if extensively swollen
choice of abx for acute OE
- pseudonomas ciprofloxacin for DM
- not aminoglycosides if perforated tympanic membrane
complication of acute OE
malignant OE
what is malignant OE
-diabetic patient with excessive pain and OE
-osteomyelitis of temporal bone due to pseudomonas infection
aggressive form
immunocompromised also affected
symptoms of malignant OE
DM or immunocompromised
severe otalgia
temporal headaches
purulent discharge
treatment of Malignant OE
aural toileting
insertion of wicks
high dose ciprofloxacin
surgery for debridement
chronic otitis externa presentation
usuall bilateral painless relapse thickened skin of canal chronic discharge rare hearing loss
management of chronic otitis externa
-cleansing ear
antibacterial ear drops
exostosis is
a bony growth - bony protuberance
cause of exostosis
-triggered by cold water-surgers
management exostosis
-surgery only if obstructive and problems with wax
otherwise leave alone
presentation exostosis
conductive hearing loss
what is furunculosis
infection in the hair follicles
lateral 1/3 of EAM is hairy
follicle infection
s.aureus main cause
presentation of furunuculosis and rx
-severe throbbing pain with pyrexia usually precedes the rupture of the abscess
rx
- abx
- drain
round foreign object use
blunt hook
syringe as long as not dehydrated
tympanosclerosis is
calcification of the fibrous layer
previous ear disease
not clinically relevant