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Hyperbilirubinemia Requiring Exchange Transfusion as a Risk Factor for Later-Onset Hearing Loss
Susan Wiley1, Vivian Kaul2, Oliver F Adunka3,4
1Cincinnati Children's Hospital Medical Center/University of Cincinnati, Cincinnati, OH.
Insights
Hyperbilirubinemia requiring exchange transfusion is a risk factor for childhood hearing loss. Infants with this condition should undergo Automated Auditory Brainstem Response screening and continued monitoring for optimal outcomes.
Area of Science:
- Pediatric Audiology
- Neonatal Care
- Evidence-Based Medicine
Background:
- The Joint Committee on Infant Hearing (JCIH) previously identified hyperbilirubinemia requiring exchange transfusion as a risk factor for childhood hearing loss.
- This review critically examines the evidence supporting the JCIH recommendation.
Purpose of the Study:
- To evaluate the strength of evidence linking hyperbilirubinemia requiring exchange transfusion to childhood hearing loss.
- To inform clinical practice guidelines for hearing screening and monitoring in at-risk infants.
Main Methods:
- A comprehensive literature search was conducted using PubMed with keywords 'hyperbilirubinemia' and 'hearing loss'.
- Seventy-seven original papers were identified, with 44 undergoing full review and 21 being graded for evidence quality.
- Recommendations were based on graded evidence and expert consensus.
Main Results:
- A moderate level of evidence supports hyperbilirubinemia requiring exchange transfusion as a risk factor for elevated hearing thresholds in infants and young children.
- Automated Auditory Brainstem Response screening is recommended for this infant population.
- The net benefit of these interventions is moderate to substantial.
Conclusions:
- Close monitoring of hearing, speech, and language milestones is crucial for infants with hyperbilirubinemia requiring exchange transfusion, even if they pass newborn hearing screening.
- Early detection and intervention can lead to improved developmental outcomes.
Background:
Previous position statements by the Joint Committee on Infant Hearing (JCIH) have recommended the presence of hyperbilirubinemia requiring exchange transfusion as a risk factor for childhood hearing loss. This article examines the strength of the evidence to support this recommendation.
Methods:
A PubMed® query using the keywords hyperbilirubinemia and hearing loss identified 77 original papers. All abstracts were reviewed for consideration of full article review and 44 articles were reviewed for consideration of inclusion and grading, with 21 articles graded using structured evidence-grading forms. Nineteen articles were included to provide supporting rationale for recommendations. Evidence grading was completed by recommendation.
Results:
A moderate level of evidence supports hyperbilirubinemia requiring exchange transfusion as a risk factor for elevated hearing thresholds among infants and young children. It is recommended to employ Automated Auditory Brainstem Response screening in this population of infants. These recommendations are based on the findings across multiple graded studies where the net benefit is moderate or substantial. Intervals for on-going monitoring of hearing previously recommended by JCIH are supported by expert consensus.
Conclusion:
If an infant with hyperbilirubinemia requiring exchange transfusion passes the newborn hearing screening, close monitoring of hearing, speech, and language milestones are important and should lead to improved outcomes for the child.
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