Objective The aim of this study is to examine, through auditory evoked potential (AEP), the incidence rate of acute reversible hearing impairments among the infants under 1 year of age, who had recovered from viral meningitis, and also to identify the rate of severe hearing loss which is known t...
Objective The aim of this study is to examine, through auditory evoked potential (AEP), the incidence rate of acute reversible hearing impairments among the infants under 1 year of age, who had recovered from viral meningitis, and also to identify the rate of severe hearing loss which is known to be more prevalent than other sequelae through AEP follow-up.
Method The tested subjects were 440 ears from 220 infants (126 males and 94 females) who were diagnosed with viral meningitis. They were put into three different groups by age and were examined with AEP. Among them, 94 ears from 47 patients received AEP more than twice. I latency, V latency, I-III interpeak latency (IPL), and III-V IPL were checked for each group.
Results In the first AEP conducted on 220 patients (440 ears), the average values of I latency and V latency, I-III IPL were delayed compared with normal values in all groups. Comparing with the second AEP, I latency and V latency were significantly shortened, but I-III, III-V IPL changes were not. Among the 8 patients that received AEP more than three times, 2 patients were diagnosed in severe hearing loss.
Conclusion Although the incidence rate of hearing loss among viral meningitis patients is low, the risk of severe hearing loss should not be neglected. Thus, the follow-up AEP may be helpful for early detection of hearing problem in viral meningitis patients.
Objective The aim of this study is to examine, through auditory evoked potential (AEP), the incidence rate of acute reversible hearing impairments among the infants under 1 year of age, who had recovered from viral meningitis, and also to identify the rate of severe hearing loss which is known to be more prevalent than other sequelae through AEP follow-up.
Method The tested subjects were 440 ears from 220 infants (126 males and 94 females) who were diagnosed with viral meningitis. They were put into three different groups by age and were examined with AEP. Among them, 94 ears from 47 patients received AEP more than twice. I latency, V latency, I-III interpeak latency (IPL), and III-V IPL were checked for each group.
Results In the first AEP conducted on 220 patients (440 ears), the average values of I latency and V latency, I-III IPL were delayed compared with normal values in all groups. Comparing with the second AEP, I latency and V latency were significantly shortened, but I-III, III-V IPL changes were not. Among the 8 patients that received AEP more than three times, 2 patients were diagnosed in severe hearing loss.
Conclusion Although the incidence rate of hearing loss among viral meningitis patients is low, the risk of severe hearing loss should not be neglected. Thus, the follow-up AEP may be helpful for early detection of hearing problem in viral meningitis patients.
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