Pathology Part 1 Flashcards
Acute otitis media
A painful type of ear infection. Middle ear becomes inflamed and infected.
Common organisms that cause Acute otitis media
Most infections are secondary to bacteria, particularly Streptococcus pneumonaie, Haemophilus influenzae and Moraxella catarrhalis
Features of Acute otitis media
> Otalgia
May tug or rub their ear
Fever 50% of cases
Hearing loss
Recent viral URTI symptoms (e.g. coryza)
Ear discharge if tympanic.m perforates
Possible otoscopy findings in Acute otitis media
> Bulging tympanic.m → loss of light reflex
Opacification or erythema of tympanic.m
Perforation with purulent otorrhoea
Decreased mobility using pneumatic otoscope
Otorrhoea
Drainage of liquid from the ear
Acute otitis media management
- Usually self-limiting
- Antibiotics in some cases (criteria)
- Analgesia
- Seek medical help if symptoms worsen or do not improve after 3 days.
When are antibiotics indicated in Acute otitis media?
> Symptoms lasting more than 4 days or not improving
Systemically unwell but not requiring admission
Immunocompromise or high risk of complications
Younger than 2 years with bilateral otitis media
Otitis media with perforation and/or discharge
If antibiotics are given in Acute otitis media, what is the antibiotic of choice?
A 5-7 day course of amoxicillin is first-line
Penicillin allergy ; erythromycin or clarithromycin
Chronic suppurative otitis media (CSOM)
Defined as perforation of the tympanic membrane with otorrhoea for > 6 weeks
Common sequelae after Acute otitis media
> Perforation tympanic mem. → otorrhoea
Unresolved acute otitis media with perforation may develop into CSOM
Hearing loss
Labyrinthitis
Complications of Acute otitis media
- mastoiditis
- meningitis
- brain abscess
- facial nerve paralysis
Sinusitis
Describes inflammation of the mucous membranes of the paranasal sinuses. The sinuses are usually sterile
Most common organisms to cause Sinusitis
Streptococcus pneumoniae
Haemophilus influenzae
Rhinoviruses.
Predisposing factors that lead to Sinusitis
- Nasal obstruction e.g. septal deviation or nasal polyps
- Recent local infection e.g. rhinitis or dental extraction
- Swimming/diving
- Smoking
Features of Sinusitis
Facial pain - pressure pain worse on bending forward
Nasal discharge: usually thick and purulent
Nasal obstruction
Management of Sinusitis
- Analgesia
- Intranasal decongestants
- Intranasal corticosteroids may be considered if the symptoms have been present for more than 10 days
- Oral antibiotics given for severe presentations
Antibiotics which may be given in Sinusitis
Phenoxymethylpenicillin first-line, co-amoxiclav if ‘systemically very unwell, signs and symptoms of a more serious illness, or at high-risk of complications’
When are antibiotics indicated in sinusitis?
Given for severe presentations - ‘systemically very unwell, signs and symptoms of a more serious illness, or at high-risk of complications’
When are intranasal corticosteriods indicated in sinusitis?
May be considered if the symptoms have been present for more than 10 days
Most common organism to cause Acute tonsillitis
Streptococcus pyogenes the most common organism
Characteristics of Acute tonsillitis
Pharyngitis, fever, malaise and lymphadenopathy
One condition that mimics Acute tonsillitis
Infectious mononucleosis
Treatment for Acute tonsillitis
Penicillin type antibiotics is indicated for bacterial tonsillitis
Complication of Acute tonsillitis
May result in local abscess formation (quinsy)
Allergic rhinitis
An inflammatory disorder of the nose where it become sensitized to allergens such as house dust mites and grass, tree and weed pollens
The three classifications of Allergic rhinitis
- seasonal:
- perennial
- occupational
Seasonal Allergic rhinitis
Symptoms occur around the same time every year. Seasonal rhinitis which occurs secondary to pollens is known as hay fever
Perennial Allergic rhinitis
Symptoms occur throughout the year
Occupational Allergic rhinitis
Symptoms follow exposure to particular allergens within the work place
Features of Allergic rhinitis
> sneezing > bilateral nasal obstruction > clear nasal discharge > post-nasal drip > nasal pruritus
Management for Allergic rhinitis
- Allergen avoidance
- Mild-to-moderate intermittent, or mild persistent symptoms: oral or intranasal antihistamines
- Moderate-to-severe persistent symptoms, or initial drug treatment is ineffective - intranasal corticosteroids
Management of mild-to-moderate intermittent, or mild persistent symptoms of Allergic rhinitis
Oral or intranasal antihistamines
Management of moderate-severe and persistant symptoms of Allergic rhinitis
Intranasal corticosteroids
Oxymetazoline
Nasal decongestant
Complications of prolonged use of nasal decongestants
As increasing doses are required to achieve the same effect
Rebound hypertrophy of the nasal mucosa may occur upon withdrawal
Rhinitis medicamentosa
Rebound hypertrophy of the nasal mucosa
Audiogram findings in sensorineural hearing loss
Both air and bone conduction are impaired
Audiogram findings in conductive hearing loss
Only air conduction is impaired
Audiogram findings in mixed hearing loss
Both air and bone conduction are impaired, with air conduction often being ‘worse’ than bone
Normal Audiogram findings
Anything above the 20dB line is essentially normal
Sensorineural hearing loss (SNHL)
Caused by damage to the structures in your inner ear or your auditory nerve.
Conductive hearing Loss
When the natural movement of sound through the external ear or middle ear is blocked, and the full sound does not reach the inner ear.
Auricular haematomas
Describes a collection of blood within the cartilaginous auricle (outer ear) which typically results from blunt trauma - common in rugby players and wrestlers.
Management of Auricular haematomas
- Need same-day assessment by ENT
2. Incision and drainage
Benign paroxysmal positional vertigo
Characterised by the sudden onset of dizziness and vertigo triggered by changes in head position. The average age of onset is 55 years and it is less common in younger patients.
Benign paroxysmal positional vertigo Tiny calcium “stones” inside your inner ear canals help you keep your balance. Sometimes these stones move into an area of your inner ear - the semicircular canal. When you move your head in certain ways, the stones in the semicircular canal move. Sensors in the semicircular canal are triggered by the stones, which causes a feeling of dizziness
Features of Benign paroxysmal positional vertigo (BPPV)
Vertigo triggered by change in head position (e.g. rolling over in bed)
May be associated with nausea
Each episode typically lasts 10-20 seconds
Positive Dix-Hallpike manoeuvre, indicated by: patient experiences vertigo & rotatory nystagmus
Diagnosis of BPPV
Dix-Hallpike manoeuvre
Positive result indicated by indicated by vertigo & rotatory nystagmus
Management of BPPV
Epley manoeuvre
Exercises they can do themselves at home, termed vestibular rehabilitation, for example Brandt-Daroff exercises
Prognosis for BPPV
Good prognosis and usually resolves spontaneously after a few weeks to months
Around half of people with BPPV will have a recurrence of symptoms 3–5 years after their diagnosis
Black hairy tongue
Common condition which results from defective desquamation of the filiform papillae. Despite the name the tongue may be brown, green, pink or another colour.
Predisposing factors that lead to Black hairy tongue
> poor oral hygiene > antibiotics > head and neck radiation > HIV > intravenous drug use
Management of Black hairy tongue
- Tongue scraping
2. Topical antifungals if Candida
Branchial cleft cyst
A lump that develops in the neck or just below the collarbone. May have a fistula and are therefore prone to infection. They may enlarge following a respiratory tract infection.
Cholesteatoma
A non-cancerous growth of squamous epithelium that is ‘trapped’ within the skull base causing local destruction. Most common in patients aged 10-20 years.
What congenital abnormality increases the risk of Cholesteatoma by 100 fold
Being born with a cleft palate
Features of Cholesteatoma
> foul-smelling, non-resolving discharge > hearing loss > vertigo > facial nerve palsy > cerebellopontine angle syndrome
Otoscopy findings in cholesteatoma
‘attic crust’ - seen in the uppermost part of the ear drum
Management of cholesteatoma
Referred to ENT for consideration of surgical removal
Chronic rhinosinusitis
An inflammatory disorder of the paranasal sinuses and linings of the nasal passages that lasts 12 weeks or longer.
Predisposing factors for Chronic rhinosinusitis
- atopy: hay fever, asthma
- nasal obstruction e.g. Septal deviation or nasal polyps
- recent local infection e.g. Rhinitis or dental extraction
- swimming/diving
- smoking
Features of Chronic rhinosinusitis
Facial pain: frontal pressure pain which is worse on bending forward
Nasal discharge: usually clear if allergic or vasomotor. Thicker, purulent discharge suggests secondary infection
Nasal obstruction: e.g. ‘mouth breathing’
Post-nasal drip: may produce chronic cough
Management of Chronic rhinosinusitis
- avoid allergen
- intranasal corticosteroids
- nasal irrigation with saline solution
Defined by the presence of at least two out of four cardinal symptoms (i.e., facial pain/pressure, hyposmia/anosmia, nasal drainage, and nasal obstruction) for at least 12 weeks
Red flag symptoms for Chronic rhinosinusitis
- unilateral symptoms
- persistent symptoms despite compliance with 3 months of treatment
- epistaxis
Cochlear implant
An electronic device that may be offered to patients with severe-to-profound hearing loss.
Criteria for getting a cochlear implant
In children, audiological assessment and/or difficulty developing basic auditory skills.
In adults, patients should have completed a trial of appropriate hearing aids for at least 3 months which they have been objectively demonstrated to receive limited or no benefit from.
Contraindications for receiving cochlear implant
Lesions of cranial nerve VIII or in brain stem causing deafness
Chronic infective otitis media, mastoid cavity or tympanic membrane perforation
Cochlear aplasia
Acoustic neuroma features
Features predicted by affected cranial nerves
> cranial nerve VIII: hearing loss, vertigo, tinnitus
> cranial nerve V: absent corneal reflex
> cranial nerve VII: facial palsy
Another name for acoustic neuroma
Vestibular schwannomas