Complications of Bacterial Meningitis
A 4-year-old girl is admitted with culture-confirmed pneumococcal meningitis and is receiving ceftriaxone, vancomycin, and dexamethasone. On day 2 fundoscopy shows bilateral papilloedema, but she is alert with no focal neurological deficit, and computed tomography of the head shows no hydrocephalus, abscess, or mass effect. Her parents ask what she is most at risk of. Which is the most likely long-term complication of her illness?
- A.Spastic cerebral palsy
- B.Chronic congestive heart failure
- C.Sensorineural hearing lossCorrect
- D.Permanent bilateral vision loss
Explanation
Sensorineural hearing loss is the most frequent long-term sequela of bacterial meningitis in children, affecting roughly 10 to 30 percent of survivors and being commonest after pneumococcal disease. It results from inflammatory spread through the cochlear aqueduct into the perilymph causing labyrinthitis and damage to the organ of Corti, which is why every child recovering from bacterial meningitis needs formal audiological assessment before or shortly after discharge, and no later than 4 weeks afterwards. Early dexamethasone reduces this risk, which is why it must be given before or with the first antibiotic dose. Papilloedema signals raised intracranial pressure from cerebral oedema and impaired cerebrospinal fluid resorption; in bacterial meningitis this is usually transient and rarely leads to optic atrophy or permanent visual loss, whereas visual loss is a more recognised complication of tuberculous and fungal meningitis with basal exudates and optic arachnoiditis. Motor deficits such as spastic cerebral palsy, seizures, and intellectual disability do occur but are considerably less common than hearing loss. Heart failure is not a recognised sequela of meningitis. Other complications to anticipate include subdural effusion, syndrome of inappropriate antidiuretic hormone secretion, and cerebral infarction. Timely audiology allows early hearing aids or cochlear implantation, which must be considered promptly before cochlear ossification occurs.
Why each option
- A.
- Spastic motor deficits occur but are much less common than hearing loss after bacterial meningitis.
- B.
- Heart failure is not a recognised complication of bacterial meningitis.
- C.
- Correct. Sensorineural hearing loss from cochlear inflammation is the commonest long-term sequela, so audiology is mandatory before discharge.
- D.
- Papilloedema in bacterial meningitis is usually transient; permanent visual loss is more typical of tuberculous or fungal meningitis.
Reference: Nelson Textbook of Pediatrics, 22nd ed., 2024, Acute Bacterial Meningitis Beyond the Neonatal Period
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