32-year-old gentleman was diagnosed with COM squamous disease 5 years back and was not treated. Now he has developed severe rotatory vertigo with vomiting and profound hearing loss. a. What complication has he developed now? (1 mark) b. How do you investigate and treat this patient? (2 + 2 marks) c. What are the other intratemporal complications? (2 marks
Reading File
Finding Sources
Finding Sources
Searching PubMed
"chronic otitis media" AND labyrinthitis
Searching the Web
chronic suppurative otitis media labyrinthitis complications investigation management guideline
Finding Sources
Finding Sources
Finding Sources
Finding Sources
a. Diagnosis
He has developed acute suppurative labyrinthitis secondary to unsafe CSOM (cholesteatoma), likely via erosion/fistula of the lateral semicircular canal. Severe vertigo with vomiting and profound sensorineural hearing loss is characteristic.
b. Investigation and treatment
Investigations
- Otomicroscopy after aural toilet: look for cholesteatoma, granulations, discharge and a labyrinthine fistula.
- Tuning-fork tests and pure-tone audiometry: usually shows severe to profound SNHL.
- Fistula test, nystagmus examination, and vestibular assessment, if tolerated.
- Ear swab for culture and sensitivity, CBC, inflammatory markers, blood cultures if febrile.
- HRCT temporal bone: assess cholesteatoma, ossicular destruction, mastoid disease and lateral semicircular canal erosion.
- Contrast MRI brain/temporal bone if intracranial extension, meningitis, or labyrinthine involvement is suspected. CT/MRI is particularly indicated in CSOM with vertigo because it may reveal labyrinthitis, bone erosion, or abscesses, as summarized in the MSD diagnostic guidance.
Treatment
- Admit urgently under ENT care.
- Start IV broad-spectrum antibiotics with antipseudomonal cover, then tailor to culture results.
- Aural toilet, antiemetics, IV fluids, and a short course of vestibular suppressants for severe acute vertigo.
- Urgent mastoid exploration / canal-wall-down mastoidectomy (modified radical mastoidectomy) to eradicate cholesteatoma and drain infection; manage any labyrinthine fistula appropriately. Otogenic suppurative labyrinthitis often needs early surgery plus culture-directed antibiotics (Cummings Otolaryngology Head and Neck Surgery, section “Otogenic Labyrinthine Infections”).
- Evaluate for and treat associated intracranial complications. Hearing loss is often permanent.
c. Other intratemporal complications of COM
- Acute/coalescent mastoiditis and mastoid abscesses, such as postauricular, Bezold, zygomatic or Citelli abscess.
- Facial nerve palsy.
- Petrositis (Gradenigo syndrome).
- Labyrinthine fistula, usually involving the lateral semicircular canal.
Other recognized intratemporal complications include hearing loss and vestibular dysfunction; Cummings also lists mastoiditis, petrositis, labyrinthitis, and facial paralysis as intratemporal complications of otitis media.
What distinguishes labyrinthitis from a lateral semicircular canal fistula?
Reading File
Finding Sources
Finding Sources
Searching PubMed
"labyrinthine fistula" AND cholesteatoma
Searching the Web
cholesteatoma lateral semicircular canal fistula versus labyrinthitis clinical hearing loss fistula test
The distinction is mainly diffuse inner-ear infection and loss of function versus a localized bony erosion creating an abnormal pressure pathway.
| Feature | Suppurative labyrinthitis | Lateral semicircular canal fistula |
|---|---|---|
| Pathology | Bacterial infection has entered the membranous labyrinth | Cholesteatoma erodes bone over the lateral semicircular canal, often with the endosteum still intact |
| Vertigo | Sudden, severe, continuous rotatory vertigo with vomiting | Usually intermittent vertigo precipitated by pressure changes, ear cleaning, tragal pressure, or loud sound |
| Hearing | Rapid severe to profound SNHL, often permanent | Hearing may be normal, conductive, mixed, or mildly SNHL. Profound acute SNHL suggests progression to labyrinthitis |
| Nystagmus | Spontaneous, typically toward the healthy ear in the destructive phase | Pressure-induced nystagmus may occur |
| Fistula test | Usually negative/not a defining feature | May be positive: pressure on tragus or pneumatic otoscopy induces vertigo/nystagmus. A negative test does not exclude a fistula |
| Imaging | MRI may show labyrinthine enhancement; CT assesses coexistent temporal-bone disease | HRCT temporal bone may show erosion/dehiscence of the lateral semicircular canal |
| Significance | Infective emergency needing IV antibiotics and urgent eradication of ear disease | Structural complication needing cholesteatoma clearance and careful fistula repair/coverage |
In the original case, the combination of severe persistent vertigo, vomiting, and profound hearing loss favors acute suppurative labyrinthitis, possibly caused by a cholesteatoma-related lateral semicircular canal fistula. Bacterial invasion of the labyrinth produces prompt total auditory and vestibular loss, whereas a fistula alone more often causes pressure-provoked vestibular symptoms. Cummings notes that a fistula can itself cause vertigo and SNHL, and can be the route through which secondary suppurative labyrinthitis develops.
patient presents to the ENT OPD with earache and decreased hearing. On examination, there is tragal tenderness and impacted wax
Reading File
Finding Sources
Finding Sources
Searching PubMed
"otitis externa" AND treatment
Searching the Web
acute otitis externa tragal tenderness management cerumen impaction guideline
This is most consistent with acute diffuse otitis externa with impacted cerumen.
- Tragal tenderness is a key clinical sign of otitis externa, due to inflammation of the external auditory canal.
- The decreased hearing is usually conductive, caused by the impacted wax and canal edema/debris.
Management
- Give analgesics.
- Soften and remove the wax carefully by aural toilet/microsuction. Avoid syringing if tympanic membrane status cannot be assessed, or if perforation is suspected.
- Treat otitis externa with topical antibiotic ear drops, preferably a non-ototoxic quinolone preparation if the tympanic membrane cannot be visualized.
- Keep ear dry and avoid instrumentation.
- If the canal is markedly swollen, insert an ear wick to permit drop delivery.
- Review in 48 to 72 hours. Consider oral antibiotics only if infection extends beyond the canal or in high-risk patients such as those with diabetes or immunocompromise.
The AAO-HNS acute otitis externa guideline supports topical therapy plus aural toilet/wick when the canal is obstructed.
5 important risk factors for congenital hearing impairment
Reading File
Finding Sources
Searching PubMed
"hearing loss" AND newborn risk factors
Searching the Web
JCIH risk factors congenital hearing loss family history NICU congenital infections craniofacial anomalies
Five important risk factors for congenital/permanent childhood hearing impairment are:
- Family history of permanent childhood or congenital hearing loss.
- Intrauterine infections: especially congenital CMV, rubella, toxoplasmosis, syphilis, or herpes.
- NICU admission for more than 5 days, particularly with assisted ventilation, ECMO, or severe illness.
- Craniofacial anomalies involving the pinna, external auditory canal, temporal bone, or associated syndromes.
- Hyperbilirubinemia requiring exchange transfusion.
Other accepted risk factors include low birth weight/prematurity, low Apgar score or birth asphyxia, ototoxic drugs such as aminoglycosides, bacterial meningitis, and syndromes associated with deafness (for example, Waardenburg, Usher, and Down syndrome).
The CDC risk-indicator list includes family history, NICU care, congenital infections, craniofacial anomalies, and severe hyperbilirubinemia.
This is a shared conversation. Sign in to Orris to start your own chat.