Hearing loss after Hemophilus influenzae meningitis. Follow-up study with auditory brainstem potentials
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Abstract:
Hearing loss was studied prospectively using auditory brainstem potentials in 34 children with Hemophilus influenzae meningitis treated with chloramphenicol and in 36 children with purulent meningitis caused by microorganisms other than H influenzae treated with ampicillin. Our results indicate that high doses of ampicillin are not associated with permanent hearing loss. Moreover, no statistically significant difference was found in the incidence of hearing loss following H influenzae meningitis and that following meningitis caused by other microorganisms, either during the acute phase or in the convalescent period. Neurological damage, when present, was probably located in the inner ear or in the auditory nerve. Finally, early hearing loss in purulent meningitis does not always constitute an irreversible lesion.
Insights
High-dose ampicillin did not cause permanent hearing loss in children with meningitis. The incidence of hearing loss was similar for Hemophilus influenzae meningitis and other bacterial meningitis types.
Area of Science:
- Pediatrics
- Neurology
- Otolaryngology
Background:
- Bacterial meningitis can lead to neurological complications, including hearing loss.
- The impact of specific antibiotics and causative agents on hearing outcomes requires further investigation.
Purpose of the Study:
- To prospectively evaluate hearing loss in children with bacterial meningitis.
- To compare hearing outcomes between meningitis caused by Hemophilus influenzae and other microorganisms.
- To assess the ototoxicity of ampicillin treatment.
Main Methods:
- Prospective study involving auditory brainstem potentials.
- Comparison of hearing loss incidence in two groups of children with meningitis.
- Analysis of hearing loss during acute and convalescent phases.
Main Results:
- High-dose ampicillin treatment was not associated with permanent hearing loss.
- No significant difference in hearing loss incidence was observed between H. influenzae meningitis and meningitis from other causes.
- Neurological damage potentially affected the inner ear or auditory nerve.
Conclusions:
- Ampicillin appears safe regarding hearing function in pediatric meningitis.
- Hearing loss in purulent meningitis may not always be permanent, suggesting potential for recovery.
- Early detection and management of hearing impairment are crucial.