ENT Flashcards
What is found in the anterior triange of the neck?
- Larynx
- Hypopharynx
- Carotid sheath
- Thyroid gland
- Deep cervical lymph nodes
What is found in the Posterior triangle of the neck?
- Lymph nodes
- Accessory nerve
- Subclavian artery
What are the lymph node levels of the neck, what is found in each level?
Level 1
Level 2
Level 3
Level 4
Level 5
Level 6
Level 7
- Level 1 – Submental & Submandibular lymph nodes
- Level 2 – Upper deep cervical
- Level 3 – Mid deep cervical
- Level 4 – Lower deep cervical
- Level 5 – Posterior triangle
- Level 6 – Paratracheal
- Level 7 – Upper mediastinal
What are the subdivisions of the anterior triangle?
- Carotid triangle
- Submental triangle
- Digastric triangle
When taking a Hx concerning a patient with problems with their nose, what are the key questions to ask?
- Nasal obstruction
- Runny nose (Also called anterior rhinorrhoea)
- Loss of sense of smell (Also called hyposmia)
- Nose bleeds (Also called epistaxis)
- Facial pain
Other symptoms include:
- Post nasal drip
- Nasal itch
- Sneezing
- Ocular itching
When taking a Hx concerning a patient with problems with their ear, what are the key questions to ask?
- Earache (Also called otalgia)
- Ear discharge (Also called otorrhoea) – Colour/Smell/Consistency
- Hearing loss – How does it affect you?
- Tinnitus (the sensation of sound without any external stimulus)
- Dizziness
- Any problems with balance?
Other symptoms can occur and include:
- Aural blockage
- Itching
When taking a Hx concerning a patient with problems with their throat, what are the key questions to ask?
- Sore throat
- Difficulty swallowing (Also called dysphagia)
- Pain on swallowing (Also called odynophagia)
- Hoarse voice (Also called dysphonia)
- Regurgitation
Other symptoms include:
- A feeling of a lump in the throat
- Burning in the throat
- Weight loss
You are asked to perform an ear examination, what does this involve?
[Introduction]
- Wash hands & Introduce self
- Ask Patient name & DOB & Age
- Today I am going to be doing an examination of your ear, having a look at it from the outside, then using a scope to look inside the ear, this will involve me getting close to your ears
- Does that sound ok?
- Do you have any pain at the moment?
- Would you like some painkillers?
- For the examination I will need to have access to both your ears, so can you please tie your hair back, and remove any piercings that might obstruct your ears/canal?
- I’ll need you sitting comfortably on a chair please
[General Inspection]
- Where exactly is the pain?
- Is it in a specific area/generalised?
- Look at the patient sat in the chair, assess for:
- Signs of pain
- Discomfort
- Look in ear
- Any hearing aid/cotton wool needs to be removed for the examination
[Inspection]
- Assess R & L ear:
- Size & shape of the Pinna
- Extra cartilage tags
- Pre-auricular sinuses or pits
- Signs of trauma
- Perichondral haematoma
- Lesions, Massess
- Condition of the skin
- Inflammation around the ear
- Eryspelas
- Mastoiditis
- Discharge
- Scars of previous surgery
- Assess other ear
[Palpation]
- Gently palpate, for tenderness:
- Tragus
- Around the mastoid
- Gentle tug on pinna
- Assess lymph nodes
- Pre-auricular
- Post auricular
[Otoscope]
- Prepare: Attach the speculum (New speculum for each patient)
- Correct size for patients ear canal
- Ensure it is attached firmly
- Put otoscope on
- Check light is working correctly
- Insert otoscope into the test ear Hold near head of otoscope like holding a pen
- Left ear - Left hand with handle facing left
- Right ear - Right hand with handle facing right
- Gently pull up and back on pinna – To straighten the external auditory meatus
- Stabilise otoscope by using little finger to rest on patients temple
- Gradually insert speculum into the external auditory meatus
- Look in ear canal:
- Skin changes
- Foreign body
- Wax (Normal)
- Discharge
- Assess the tympanic membrane
- Handle
- Lateral process of the malleus
- Light reflex/Cone of light
- Pars tensa
- Pars flaccida
- Look in ear canal:
- Comment on any abnormalities
- Otitis externa (Acute/chronic/fungal)
- Otitis Media
- Cholesteatoma
- Perforation
- Tympanosclerosis
[Conductive & Sensorineural hearing loss]
- Basic hearing test
- Ask patient to put finger in one of their ears
- Whisper letters/numbers into patients other ear
- Can you repeat what I just said?
- Repeat in other ear
- Use different letters/numbers
- Note:
- If there is a hearing impairment it is a conductive problem/sensorineural
- Conductive -> Outer ear/TM/Middle ear
- Sensorineural -> Inner ear or CN 8
Rinne’s
- Rinne’s test Place vibrating 512Hz tuning fork firmly on patients mastoid process of test ear
- Can you hear the tuning fork?
- Transfer to in front of the ear canal
- Which is louder
- Note:
- Normal -> In front of the ear should be louder than the mastoid process
- Air conduction is > Bone conduction
- Rinnes test POSITIVE:Normal + Hearing impairment
- Sensorineural hearing loss
- Rinnes test NEGATIVE:Abnormal + Hearing impairment
- Conductive hearing loss
- Normal -> In front of the ear should be louder than the mastoid process
- It is possible to have a Rinnes negative result - but have sensorineural deafness
- Because if the sensorineural deafness is complete then the vibration from the test ear -> transfers to the non-test ear via the bone
- That’s why you use Webers test to confirm this, as the sound should lateralise to the non-test ear
Weber’s test
- Place the vibrating 512Hz tuning fork centrally and firmly on patients forehead
- Ask patient - where can you hear the sound?
- Centrally
- Left
- Right
- If the patient has Conductive hearing loss
- Localises TOWARDS the Abnormal ear
- Sensorineural hearing loss
- Localises AWAY from affected ear
[Complete exam]
- Thank patient & Wash hands
- “This is patient x who is a x year old Male/Female with the following findings”
- I would take a full Hx + examine any other systems – Nose/Throat
- I would consider the differentials
- I would order relevant investigations
- Observations
- Bloods
- Imaging
- I would initiate management of the most likely differential
You are asked to perform a nasal examination, what does this involve?
[Introduction]
- Wash hands & Introduce self
- Ask Patient name & DOB & Age
- Today I am going to be doing an examination of your ear, having a look at it from the outside, then using a scope to look inside the nose
- Does that sound ok?
- Do you have any pain at the moment?
- Would you like some painkillers?
- For the examination I will need to have access to your nose so can you please remove your glasses for me?
- I’ll need you sitting comfortably on a chair please
[General Inspection]
- Where exactly is the pain?
- Is it in a specific area/generalised?
- Look at the patient sat in the chair, assess for:
- Signs of pain
- Discomfort
- Runny nose
- Do they look systemically well?
[Inspection]
- Examine the external nose:
- Size and shape
- Obvious bend or deformity
- Swelling
- Bruising
- Scars
- Abnormal creases
- Redness
- Skin changes
- Discharge/crusting
- Offensive smell
- Examine the nose internally
- Can you please lift the tip of your nose with your thumb?
- Use pen torch to look, note:
- Abnormalities
- Septal deviation
[Palpation]
- Gently palpate the nasal bone & cartilage, assess for:
- Tenderness
- Alignment
- If signs of trauma then palpate the:
- Nasal process
- Facial surface
- Frontal process of maxilla
- Infra-orbital ridges
- If signs of trauma then palpate the:
- What im going to do next is just to block one of your nostrils and can you just breathe through the other one
- Assess difference in airflow
- Block other nostril
[Otoscope]
- Attach new speculum to otoscope
- Examine R nostril
- Hold R nostril otoscope in L hand
- Examine L nostril
- Hold L nostril with otoscope in R hand
- Insert speculum gently into nostril & open up nasal cavity
- Examine nasal cavity
- Septum
- Turbines (Inferior turbine should be visible)
- Signs of inflammation
- Any polyps or foreign body
[Complete exam]
- Thank patient & Wash hands
- “This is patient x who is a x year old Male/Female with the following findings”
- I would take a full Hx + examine any other systems
- I would consider the differentials
- I would order relevant investigations
- Observations
- Bloods
- Imaging
- I would initiate management of the most likely differential
You are asked to perform a neck/throat examination, what does this involve?
[Introduction]
- Wash hands & Introduce self
- Ask Patient name & DOB & Age
- Today I am going to be doing an examination of your throat, having a look at it from the outside, then using a scope to look inside your throat
- Does that sound ok?
- Do you have any pain at the moment?
- Would you like some painkillers?
- For the examination I will need you to be able to see your neck, so please take off your scar or top if blocking neck
- I’ll need you sitting comfortably on a chair please
[General Inspection]
- Where exactly is the pain?
- Is it in a specific area/generalised?
- Look at the patient sat in the chair, assess for:
- Signs of pain
- Discomfort
- Systemically well at rest?
- Cachexia
- Hoarse voice
[Inspection]
- Look externally
- Scars
- Visible lymph nodes
- Massess on neck If midline - Can you swallow some water for me?
- Thyroglossal cyst & thyroid mass -> Move up
- Can you please stick your tongue out for me
- Thyroglossal cyst -> Moves UP, Thyroid mass will NOT
- Look internally
- Can you please remove any dentures if you have any?
- Put gloves on and get pen torch & tongue depressors
- Im going to just ask you to open your mouth, so that I can have a look at your throat. I’m going to be using these wooden spatula to push your tongue down
- Asses - Mouth
- Mucosa of the cheeks
- Condition of tongue
- Ask them to move tongue out
- Move tongue to the R & L to check the sides
- Back of tongue and tonsils - with tongue depressor
- Exudate
- Quinsy
- Uvula
- Soft palate
- Ask patient to tip head back -> Insepct the hard palate
- Buccal area
- Gingivolabial sulcus (Space b/w cheek and gums)
- Asses - Mouth
- Can you stick your tongue up for me
- Examine floor of mouth
[Palpation]
- I’m just going to have a feel of your tongue now
- Palpate base of tongue for
- Tumours
- Remove gloves, and stand behind patient - Palpate lymph nodes:
- Submental - Submandibular - Preauricular - Postauricular - Anterior cervical - Posterior cervical
- Palpate structures in neck
- Parotids - Tail of parotid (Anterior and inferior to mastoid process)
- Submandibular glands (Singular swelling)
- Palpate neck -Tip of chin - submandibular - submental - mastoid process - anterior SCM - Thyroid gland - Larynx - Posteiror triangle - Supraclavicular fossae
- Massess
- Tenderness
[Complete exam]
- Thank patient & Wash hands
- “This is patient x who is a x year old Male/Female with the following findings”
- I would take a full Hx + examine any other relevant systems
- I would consider the differentials
- I would order relevant investigations
- Observations
- Bloods
- Imaging
- I would initiate management of the most likely differential
How do you differentiate between a thyroglossal v thyroid cyst?
- Massess on neck If midline - Can you swallow some water for me?
- Thyroglossal cyst & thyroid mass -> Move up
- Can you please stick your tongue out for me
- Thyroglossal cyst -> Moves UP
- Thyroid mass will NOT
You are asked to take a throat swab from a patient, how do you go about this procedure?
[Introduction]
- Wash hands & Introduce self
- Ask Patient name & DOB & Age
- Today I am going to be doing a swab of your throat is that what you were expecting?
[Prepare equipment]
- Wash hands
- Put on apron
- Open procedure pack on to clean surface
- Partially open swab packaging
- Wear gloves
[Position patient]
- Use good light source
- I will need you to be seated with your head back and mouth wide open
- Stick your tongue out and say ahhh
[Take swab]
- Use tongue depressor to flatten tongue
- Roll swab over suspect area
- Remove swab -> Place in medium
- Remove gloves
- Wash hands
[Complete]
- Thank patient
- Explain when they will receive results
- Label sample
- Place in hazards bag - fill out paper work
- Send to microbiology
What is the following showing? What are the items labelled?
Normal throat O/E, from top to bottom
- Hard palate
- Soft palate
- Uvula
- Palatine Tonsils
- Tongue
What is the following showing? What do the arrows point to?
Normal ear O/E
- Top left – Pars flaccida
- Top right – Lateral process of malleus
- Bottom Left – Pars tensa
- Bottom right – Cone of light
Label the following diagram of the ear
- Tympanic membrane
- Pinna
- Helix
- Outer ear/External acoustic meatus
- Cartilage
- Earlobe
- Malleus - Incus - Stapes (Lateral to medial)
- Semicircular canals
- Cochlea
- 10 + 11. Vestibulococclear nerve
- 12 + 13. Eustachian tube
- Bone
How are sound waves conducted from outside into the ear?
- Sound waves – external auditory canal
- Hit the Typmanic membrane
- Transfer to ossicles (Malleus + Incus + Stapes) to the inner ear
- Hit the Oval window
- Tranfer to the cochlea
What is the cochlea?
How is it divided?
Spiral shaped cannal within the temporal bone
3 membranous compartments filled with Perilymph:
- Scala tympani
- Scala media – Filled with Endolymph
- Basilar membrane
- Organ of corti
- Scala Vestibuli
What is the function of the organ of corti?
Organ of corti = Detects sound waves – converts it into electrical signal for brain via CN8
Where is sound transmitted to in the central nervous system?
- Cochlear nerve – Cochlear nucleus in brainstem
- Decussation to contralateral side
- Up brainstem via Superior Olivary nucleus
- Through lateral leminiscus (Midbrain) – Inferior Colliculus
- Medial geniculate body
- Auditory cortex (Superior Temporal gyrus of temporal lobe)
What are the 2 types of hearing loss?
- Conductive – Problem with transmission of sound waves from external ear – middle ear
- Sensorineural – Problem with the cochlear - Cochlear nerve - Brainstem leading to abnormal/absent neurosensory impulses
- Most common in adults
Who typically gets deafness/hearing loss in adults?
- People >50yrs (Due to age related damage)
- Men
- Those exposed to excessive noise
What can cause conductive hearing loss in adults?
- Occlusion – Cerumen/Foreign body/Oedema
- Infection – Otitis externa/Otitis media/Sinusitis
- Tympanic membrane perforation
- Growths – Benign cysts/Benign or Malignant tumours
- Cholesteatoma
- Adenoids blocking the eustachian tube
What can cause sensorineural hearing loss in adults?
- Presbyacusis (Age related hearing loss)
- Noise induced hearing loss
- Ototoxic hearing loss
- Acoustic neuroma
- Menieres disease
What are the risk factors for hearing loss in children?
- FHx of deafness
- Infection – Congenital/MMR/Meningitis
- Ototoxic medications
- Low birth weight/prematurity
- Head injury
What are the common causes of hearing loss in children?
- Congenital
- Otitis Media with effusion
What is Tympanosclerosis?
Calcification of the tissue in the tympanic membrane + middle ear
Classified as:
- Myringosclerosis – Only tympanic membrane is involved
- Intratympanic tympanosclerosis – Involving ossicles/mastoid cavity
Why does tympanosclerosis develop?
- May be due to an abnormal healing response
- Most commonly develops secondary to acute & chronic otitis media
- Increased risk in children with grommet insertion for OM
How does Tympanosclerosis typically develop?
- Asymptomatic
- O/E: Chalky white patches on inspection
- May have conductive hearing loss
What does the following otoscope exam show?
Tympanosclerosis
If you suspect a person has tympanosclerosis, how should this be investigaited?
- Not usually required if visualised O/E
- Audiometry - if hearing loss
How is Tympanosclerosis managed?
- Only if there is hearing loss
- Hearing aids
- Surgery – Excision of sclerotic areas + reconstruction of ossicles
What are the differential diagnoses for otalgia (Ear pain)?
External ear
- Otitis externa
- Foreign body – Object/Impacted cerumen
- Trauma
Middle ear
- Otitis media
- Mastoiditis
- Trauma
- Obstruction of eustachian tube
Referred pain
- Adenoidectomy/Infection
- CN referred pain
- TMJ
What is acute otitis media?
- Middle ear infection
- Common in children
- Commonly caused by H.Influenzae + Streptococcus pneumoniae (Bacteria)
- Rhinovirus + RSV (Viruses)
How do patients develop acute OM?
- Upper respiratory viruses infect the nasal passages/eustachian tube/middle ear
- Impairs mucocilliary clearance of eustachian tube to clear the middle ear
What are Chronic OM and Recurrent OM?
Chronic OM:
- Inflammation of the middle ear for >3months
Recurrent OM:
- >4 episodes of OM in 6 months
Who typically gets Acute OM?
- Children
- Smoking - Passive or Active
- During the winter months
Patients with:
- Eustachian tube dysfunction
- URTI
- Sinusitis
- Craniofacial abnormalities
What is the classic Hx of Acute OM?
- Hearing loss
- Otalgia
- Fever
- Preceeding URTI e.g. Flu/Sinusitis/Pneumonia/Tonsilitis
- In children:
- Irritability/Crying/Poor feeding
- Coryza/Rhinorrhea
- Vomiting
Signs:
- Fever
- Red/Yellow/Cloudy tympanic membrane
- Bulging of TM
- May have discharge in auditory canal secondary to perforation of TM
Why is Acute OM in adults a red flag?
- Because it signifies esutachian tube dysfunction which could be caused by malignancy
- Especially if unilateral
A patient presents with the following Hx, what is the most likely diagnosis? What are the differentials?
An 18-month-old toddler presents with 1 week of rhinorrhoea, cough, and congestion. Her parents report she is irritable, sleeping restlessly, and not eating well. Overnight she developed a fever. She attends day care and both parents smoke. On examination signs are found consistent with a viral respiratory infection including rhinorrhoea and congestion. The toddler appears irritable and apprehensive and has a fever. Otoscopy reveals a bulging, erythematous tympanic membrane and absent landmarks.
- Acute otitis media
- Mastoiditis
- Migraine
- Herpes Zoster
- Trauma
- Foreign body in ear
What does the following otoscope image demonstrate?
Acute otitis media
- Erythema
- Bulging membrane
A patient presents with the following Hx suggestive of AOM, what investigations should be done?
An 18-month-old toddler presents with 1 week of rhinorrhoea, cough, and congestion. Her parents report she is irritable, sleeping restlessly, and not eating well. Overnight she developed a fever. She attends day care and both parents smoke. On examination signs are found consistent with a viral respiratory infection including rhinorrhoea and congestion. The toddler appears irritable and apprehensive and has a fever. Otoscopy reveals a bulging, erythematous tympanic membrane and absent landmarks.
- Examination of ear w/otoscope
- Clinical diagnosis based on findings
- Culture of discharge if any
- Audiometry - if chronic hearing loss suspected (Not during acute infection)
- CT/MRI - in adults to exclude complications
How do you manage a patient with confirmed AOM?
- Analgesics – Paracetamol ± NSAIDs (Ibuprofen)
- If bacterial – Avoid prescribing ABx, unless systemically unwell or symptoms not improving within 4 days
- Amoxicillin for 5 days, If allergic - Erythromycin/Clarithromycin
- Immediate ABx if - systemically unwell/risk of complications
Consider admission:
- Admission for immediate assesment – If complications of AOM, e.g. Meningitis/mastoiditis/facial nerve paralysis
- If <3 months with Fever
- Consider admission – If systemically unwell
- <3 months, or 3-6months with Fever
What are the red flags in a patient presenting with symptoms of AOM?
Urgent referral to ENT, due to suspecting nasopharyngeal cancer
- Persistent symptoms not responsive to treatment
- Persistent cervical lymphadenopathy
- Unilateral epistaxis
What is Otitis Media with effusion?
- AKA - Glue ear
- Collection of fluid in the middle ear
- Chronic inflammation, usually follows AOM in children
- Can cause hearing impairment
- Uncommon in adults - Usually due to eustachian tube dysfunction or suspicious cause e.g. tumours
Can be caused by:
- Eustachian tube dysfunction
- Chronic colonisation of the adenoids/hypertrophy
Who classically gets OME?
What are the symptoms/Signs?
- Most common cause of aquired hearing loss in childhood
- Common in ages 1-6yrs
- Less common in adulthood
- Male > Females
- Contact with people with infections/Smokers
Symptoms/Signs:
- Hearing loss
- Otalgia, may have fullness ± popping
- Hx of recurrent ear infection/URTI/Nasal obstruction
- May have balance problems
Otoscope:
- Opacification of the tympanic membrane
- No inflammation/Discharge
- Loss of light reflex
- Fullness/bulging of the typmanic membrane
- Crackling/popping tinnitus
How is a patient with OME investigated & Managed?
Investigations:
- Refer for hearing test/ENT
- May have mild conductive hearing loss
- May have spontenous resolution so active observation for 3 months
Adults:
- If unilateral - suspicious finding, MRI to rule out tumour
- Full evaluation
Management:
- Patient education – Self limiting illness
- Smoking cessation
- Assist with hearing loss
- Hearing aids if required
Surgery:
- Only if bilateral present for >3 months
- Insertion of Grommets (Ventillation tubes)
- Adenoidectomy - if recurrent URTI
- Usually resolution in 6-10 wks
Why are children particularly vulnerable to AOM?
- Vulnerable to the transer of organisms from the nasopharynx to the ear
- Angle b/w eustachian tube + wall of pharynx is wide so doesnt close shut with coughing or sneezing – avenue for transfer of pathogens
Usually caused by:
- Preceeding URTI – Haemophilus Influenzae/Strep Pneumoniae
- Viral – RSV/Rhinovirus
What is Chronic Suppurative Otitis Media?
- Chronic inflammation in the middle ear + mastoid cavity
- TM is perforated
Safe – Tubotympanic perforation (Centre of TM)
Unsafe – Atticoantral perforation (Top of TM) + Cholesteatoma
Who classically gets CSOM?
What are the symptoms/Signs?
- Uncommon in both children & adults
- Male = Females
- Patients with multiple episodes of AOM
- Children attending daycare/with craniofacial abnormalities
Symptoms/Signs:
- Chronically draining ear >2wks
- Hx of recurrent AOM
- Traumatic perforation/Insertion of grommets
- Otorrhoea without Otalgia + fever
- Hearing loss – Conductive
- Mixed hearing loss – Extensive disease
- External auditory canal - oedematous ± tender
- Discharge from the ear
- Middle ear mucosa visible on examination
In a patient with CSOM, what investigations should be ordered?
How should they be managed?
Investigations:
- NO EAR SWAB
- Audiogram – Conductive hearing loss
- MRI – if intratemporal/intracranial complications suspected
Management:
- Urgent assessment/admission to ENT – If Mastoiditis (Postauricular tenderness/swelling) or facial paralysis or vertigo or evidence of intracranial infection
- If not urgent - routine referral to ENT
- Microsuction exudate from ear canal
- Keep ear dry, avoid swimming
- Aural toilet + ABx (Topical):
- Antibiotic + Steroid combination for 3-4wks until otorrhea resolves
What is Otitis Externa?
- Inflammation of the outer ear (Auricle + External auditory canal + Outer TM)
- Can be localised or diffuse
- AKA Swimmers ear
- Due to disturbance of lipid/acid balance of the ear canal
Usually caused by:
- Infection - Most common
- Allergies/Irritants/Inflammatory conditions
How does the ear canal clean itself normally?
- Self cleaning via epithelial migration
- Skin surface moves laterally from the TM towards the ear canal opening
- Ear wax (Cerumen) - assists with cleaning & lubrication and protection from bacteria/dust/insects
What are the causes of Otitis Externa?
Infection:
- 90% Bacterial – Staph Aureus ± Pseudomonas Aureginosa
- Fungal – Aspergillus/Candida, usually following prolonged ABx/steroids
- May also be caused by Herpes Zoster – Ramsey Hunt syndrome
Skin inflammation:
- Sebhorrheic dermatitis/Psoriasis
- Acne
- Atopic eczema
- SLE
Irritants:
- Topical medications/Hearing aids/Ear plugs
- Ear trauma – Foreign bodies/Cotton buds
- Swimming
Who classically gets Otitis Externa?
What are the symptoms/signs?
- Common condition
- People who swim/immunocompromised
- Trauma to ear canal
- Foreign body/Wax build-up
Symptoms/Signs:
- Otalgia
- Itching
- Ear canal with erythema
- May have exudate/oedema
- May have discharge - can become bloody
- Mobile TM
- Pain with movement of tragus/auricle
- Pre-auricular lymphadenopathy
- Fever