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Hearing impairments and vestibular abnormalities among children with subclinical cytomegalovirus
Insights
Subclinical cytomegalovirus (CMV) is the leading cause of pediatric sensorineural hearing loss (SNHL). Early viral studies are crucial for identifying hearing impairment in newborns, guiding timely intervention and treatment strategies.
Area of Science:
- Pediatric Audiology
- Infectious Diseases
- Neonatal Screening
Background:
- Hearing loss is a significant concern in pediatric populations.
- Early identification and etiological specification are critical for effective management.
- Cytomegalovirus (CMV) is a common congenital infection with potential long-term sequelae.
Purpose of the Study:
- To highlight the importance of neonatal screening for hearing loss.
- To establish subclinical cytomegalovirus (CMV) as the primary viral cause of pediatric sensorineural hearing loss (SNHL).
- To investigate the relationship between hearing and vestibular impairments in CMV-infected children.
Main Methods:
- Retrospective analysis of 14 pediatric patients with SNHL attributed to focal CMV.
- Review of existing literature on viral causes of pediatric hearing loss.
- Inclusion of vestibular function assessments in affected children.
Main Results:
- Subclinical CMV was identified as the most frequent viral etiology for SNHL in the studied pediatric cohort.
- The findings underscore the necessity of immediate viral studies upon detecting hearing impairment during neonatal screening.
- Vestibular assessments indicated that auditory and vestibular deficits can occur independently or concurrently in CMV infections.
Conclusions:
- Neonatal screening for hearing loss should incorporate prompt viral etiology investigations, particularly for CMV.
- Early detection of CMV-related SNHL enables targeted interventions.
- CMV infection can lead to isolated or combined hearing and vestibular dysfunction, requiring comprehensive audiological and vestibular evaluation.
Abstract:
This paper strengthens the importance of neonatal screening in the early identification and etiological specification of hearing loss by demonstrating that subclinical cytomegalovirus (CMV) is the most common viral agent causing sensorineural hearing loss (SNHL) among pediatric patients. Consequently, if hearing impairment is found on neonatal screening, viral studies should be done at once. In addition to a survey of previous literature, these points are presented from a retrospective study of 14 children with SNHL caused by focal CMV. Moreover, vestibular studies are presented which suggest that hearing and vestibular impairments may operate independently of one another or conjointly in patients infected with CMV.