ENT Flashcards
Which antibiotic when given for pharyngitis of an EBV origin causes a pathogonomic rash?
Amoxicillin
Centor criteria:
The presence of 3+/4 suggests infection with
- tonsillar exudate
- tender ant. cervical lymphadenopathy
- history of fever
- absence of cough
Streptococcus
What is Lemierre syndrome?
Acute septicaemia and jugular vein thrombosis secondary to infection with
Fusobacterium species + septic emboli (to lungs, bone, muscle, kidney, liver)
Don’t do tonsillectomy unless your sure:
Give 3 points
- recurrent sore throat is due to tonsillitis
- the episodes are disabling and prevent normal functioning
- > 7 clinically signif adequately treated sore throats in last year
- > 5 in each of last 2 years or
- > 3 in each of last 3 years
- OBSTRUCTIVE SLEEP APNEA
What is laryngomalacia (common cause of chronic stridor in children)?
When arytenoids/epiglottis are soft and floppy so as baby breathes they fall in and block the airway
What type of tumour can cause stridor? Related to which virus?
Laryngeal papillomata HPV related
What condition is the most common cause of stridor and what is the most common cause?
Croup aka laryngotracheobronchitis
Parainflueza virus
What is the treatment for mod/severe laryngotracheobronchitis/croup?
single dose dexamethasone 0.15mg/kg (or presnis 1-2mg/kg)
Admit if severe
What is the treatment for mild laryngotracheobronchitis/croup?
reassure
usually self-limiting ~48hrs
In an anti-vax adult presenting with a severe sore throat and painful swallowing what emergency must you consider?
Acute epiglottitis (Haemophilus Influenzae
85% cases of laryngomalacia resolve by 2yrs, what signs warrent further investigation?
- failure to thrive
- cyanotic episodes
Which surgery is done in severe cases of laryngomalacia?
Aryepiglottoplasty
How should you initially manage acute epiglottitis?
- keep pt upright
- don’t examine throat
- don’t distress pt
- summon anesthetist and ENT surgeon
How do you diagnose suspected acute epiglottitis? What should be open and ready in case needed?
- laryngoscopy with pt intubated
- have tracheostomy set and tube prepared
How is acute epiglottitis treated? Give 2
- dexamethasone
- antibiotics
Laryngeal paralysis can be congenital and may affect one or both sides. Signs include:
- hoarse, breathy cry
- feeding difficulties + aspiration
Bilateral Laryngeal paralysis in a baby that is agitated can lead to ___ requiring treatment by___
- respiratory distress
- urgent airway intervention
- +/- tracheotomy, surgery
Acute airway obstruction in adults 3 key initial management aspects?
-give 02/heliox -reduces work of breathing
-nebulised adrenaline 1ml of 1:1000 with 1ml saline
-monitor obs closely
call on call ENT reg and anaesthetist
-take collateral hx
Acute airway obstruction in adults, 3 options for treatment, in order of escalation?
- Endotracheal intubation
- Emergency needle cricothyroidotomy
- Surgical Cricothroidotomy
What does an Emergency needle cricothyroidotomy do?
- works as a temporary measure until tracheostomy can be done
- it oxygenates but doesn’t ventilate so CO2 builds up
- lasts only up to 45mins
After how long should you investigate a hoarse voice? What red flag can it be a presentation of? Especially in__?
- 6weeks
- laryngeal carcinoma
- smokers
With a hoarse voice, what screening questions should you ask?
- GORD
- dysphagia
- smoking
- stress
- singing and shouting
What investigations can be done to assess larynx in pt presenting with hoarse voice?
- laryngoscopy (assess cord mobility and mucosa)
- video flex or rigid endoscopy with stroboscopy
5 ddx of hoarse voice
- Laryngeal cancer
- vocal cord palsy
- laryngitis
- reflux laryngitis
- Reinke’s oedema
- vocal cord nodules
Laryngitis is often self-limiting and viral but what can it be secondary to?
- staph/strep bacterial infection
- GORD
- autoimmune e.g. RA disease
What are the symptoms of laryngitis?
- hypopharngeal pain
- dysphagia
- pain on phonation
- hoarseness
- fever
Reflux laryngitis is chronic laryngeal symptoms associated w GORD, suggest 3 treatments:
- PPI
- diet/lifestyle change/ weight loss
- elevate head of bed
- surgical fundoplication
What is Reinke’s oedema? In whom is it commonly seen?
- chronic cord inflamm. from smoking/voice abuse -> gelatinous fusiform enlargement of cords
- hypothyroid, elderly female smokers
The deep gruff voice from Reinke’s oedema can be treated by…
- quitting smoking
- SALT
- laser therapy ()
Where do vocal cord nodules occur (often due to voice abuse –> husky voice)?
- junction of anterior 1/3rd and posterior 2/3rds of cord
- this is the middle of the membranous cords (posterior is cartilage)
Vocal cord nodule treatments:
- speech therapy (early)
- surgical excision
Name some Vocal cord nodule causes ddx..
- hyperkeratosis 2* to alcohol, smoking, pollution)
- leukoplakia
- granulomata
- papillomata (from HPV)
- polyps, cysts
- high dose ICS inhalers
RLN supplies the ___ muscles of the larynx except ____ which is supplied by the ___
- intrinsic
- cricothryoid
- external branch of superior laryngeal nerve
RLN is responsible for _ and _ of the vocal cords.
It arises from the __ nerve.
abduction and adduction
vagus
Signs of laryngeal nerve palsy:
- weak “breathy” voice + weak cough
- repeated coughing/aspiration
- exertional dyspnoea
Explain why you can get exertional dyspnoea with a laryngeal nerve palsy:
- at rest contralat. cord can compensate by increased abduction
- on exertion narrow glottis reduces air flow
State the stepwise investigations into a laryngeal nerve palsy:
- CXR (if no recent surgery history)
- if normal do CT
- +/- US thyroid
- +/- OGD
For non-malignant laryngeal nerve palsies, treatments include:
- injections/throplasty to support compensating cord
- reinnervation e.g. ansa-cervicallis to RLN
Name 3 speech articulation disorders that can result in a hoarse voice?
- spasmodic dysphonia
- muscle tension dysphonia
- functional speech disorders in children
What is spasmodic dysphonia?
A focal laryngeal dystonia of unknown cause, involuntary spasms of larynx cause strained strangled breaks in connected speech
How can spasmodic dysphonia treated?
Botox injections
Muscle tension dysphonia is a functional disorder, what do patients complain of?
Husky, hoarse voice that tires easily
Globus symptoms
Frequent clearing of throat
What is Muscle tension dysphonia associated with?
- voice missuse
- psychological stress
What are the 2 most common causes of a RLN palsy? other causes ?
- cancer (30%)
- iatrogenic (surgery-25%)
- CNS: polio, syringomyleia
- TB
- aortic aneurysm
What are the 4 stages in the natural history of acute otitis media?
- pre-suppuration
- suppuration
- tubal occlusion
- resolution
What is the treatment for AOM? Generally what would warrant abx? Which abx?
- analgesia and anti-pyretics
- if persists >4days
- Amoxicillin/Clarithromycin
In what groups/presentations of AOM should Abx always be given?
<2yrss old
bilateral
Perforated
If mastoiditis arises as a complication of AOM, what should you do? (3)
- urgent ENT review, admit
- IV Abx
- Myringotomy +/-grommets
What is the commonest cause of acquired hearing loss in children?
-glue ear: chronic middle ear inflammation with accumulation of fluid but no sign of infection
How does the ear look on exam in a child with glue ear?
- dull and retracted tympanic membrane
- loss of light cone
- air bubbles/fluid level behind TM
Glue ear that is unilateral in adults should be investigated for what? with? esp in whom?
- nasopharyngeal cancer
- nasoendoscopy
- chinese and >40yrs
What is suppurative otitis media? how does it present? for how long? What kind of hearing loss?
- chronic inflamm of middle ear and mastoid cavity
- painless otorrhoea >2weeks and conductive hearing loss
What is the treatment for suppurative otitis media?
ENT referral
Aural toilet
Topical abx
+/-myringoplasty/tympanoplasty
What is a cholesteatoma? What type of epithelium? Where most common?
-expanding destructive growth of keratinised squamous epithelium in middle ear especially the “attic”
How does cholesteatoma erode bone?
- local expansion
- releasing enzymes e.g. alkaline phosphatase
Symptoms of cholesteatoma:
ottorhoea, conductive hearing loss, ostitis
If cholesteatoma is untreated, what complications can arise?
- facial nerve palsy
- labyrinthitis
- meningitis
- extra/sub-dural abscess
Management of cholesteatoma?
-always surgery:: mastoidectomy