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Audiologic Status of Children with Confirmed Cytomegalovirus Infection: a Case Series
Ji Hyung Kim1, Kyung Jin Roh2, Gi Sung Nam1
1Department of Otorhinolaryngology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
Insights
Congenital cytomegalovirus (CMV) infection can cause sensorineural hearing loss (SHNL) in children, even those initially asymptomatic. Early audiological evaluation is crucial for timely diagnosis and management of CMV-related hearing impairment.
Area of Science:
- Pediatrics
- Infectious Diseases
- Audiology
Background:
- Congenital cytomegalovirus (CMV) is the leading non-genetic cause of pediatric sensorineural hearing loss (SHNL).
- Many congenital CMV cases are asymptomatic at birth, delaying diagnosis and intervention.
- A significant percentage of asymptomatic children develop SHNL later in life.
Purpose of the Study:
- To investigate the hearing status of children with confirmed congenital CMV infection.
- To review neonatal hearing screening (NHS) histories in relation to CMV-induced hearing loss.
- To emphasize the importance of audiological assessment in children with CMV.
Main Methods:
- Retrospective review of medical records for 58 children with confirmed CMV infection.
- Evaluation of clinical symptoms and signs associated with CMV.
- Comprehensive audiological testing to assess hearing status.
Main Results:
- Hearing loss was confirmed in 19% of the 58 children studied.
- Bilateral hearing loss occurred in 54.5% of affected children, unilateral in 45.5%.
- Seven children with hearing loss passed neonatal hearing screening, highlighting missed diagnoses.
Conclusions:
- Hearing loss is a significant complication of pediatric CMV infection.
- Timely audiological evaluation is essential for children with symptomatic CMV, regardless of NHS results.
- Early detection and management of CMV-related hearing loss can improve outcomes.
Background:
Congenital cytomegalovirus (CMV) infection is the most common non-genetic cause of sensorineural hearing loss (SHNL) in children. Only about 10% to 15% of children with congenital CMV are symptomatic, and most are not diagnosed at birth. About 7% to 15% of clinically asymptomatic patients may develop later complications, including SNHL, which is the most common sequela in clinically asymptomatic patients. In this study, hearing status was investigated in children with confirmed CMV infection and neonatal hearing screening (NHS) histories were reviewed to explore hearing loss caused by CMV.
Methods:
The medical records of 58 children who were diagnosed with confirmed CMV infection were reviewed for clinical symptoms and signs of CMV infection. Hearing status was evaluated with age-appropriate audiological test batteries.
Results:
A total of 58 children (M:F = 32:26 patients; age at study: mean, 5.62 years, range, 1-10 years) were diagnosed serologically with CMV infection (14 patients, 21.1%), or diagnosed via PCR of serum (5, 7.9%) and/or PCR from urine (19, 26.8%). Hearing loss was confirmed in 11 children (19.0%), being bilateral in 6 (54.5%), and unilateral in 5 (45.5%). Note that 7 of 17 ears with hearing loss passed NHS and were diagnosed only after re-evaluation when CMV infection was identified.
Conclusion:
Hearing loss is a serious complication of CMV infection in children. Our results highlight the importance of timely audiological evaluation in children with clinically symptomatic CMV infection even if they pass NHS.
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