Late onset hearing loss in very low birth weight infants
Chloe A Liu1, Lynn M Iwamoto2,3
1Department of Pediatrics, University of New Mexico, Albuquerque, NM, USA.
Insights
A standardized follow-up program significantly increased the detection of late-onset hearing loss in very low birth weight (VLBW) infants. Early diagnosis of conductive hearing loss in VLBW infants is crucial for development.
Area of Science:
- Neonatal care
- Audiology
- Pediatric development
Background:
- Very low birth weight (VLBW) infants are at high risk for hearing loss.
- Late-onset hearing loss can negatively impact speech and language development.
- Early detection and intervention are critical for optimal outcomes.
Purpose of the Study:
- To evaluate the impact of a standardized referral protocol for VLBW infants.
- To determine the incidence of late-onset hearing loss in this population.
- To assess the effectiveness of a follow-up program in improving hearing outcomes.
Main Methods:
- Retrospective study analyzing hearing outcomes and risk factors in VLBW infants (2003-2015).
- Comparison of outcomes before and after implementing a standardized follow-up program.
- Risk factor analysis comparing cases with matched controls.
Main Results:
- Late-onset hearing loss detection rose from 2.2 to 6.9 per 100 VLBW infants post-standardization.
- Follow-up compliance nearly doubled, and age at diagnosis decreased from 31 to 12 months.
- Conductive hearing loss detection increased four-fold; sensorineural hearing loss remained stable.
Conclusions:
- A substantial portion of late-onset hearing loss in VLBW infants is conductive.
- Conductive hearing loss can adversely affect speech and language development.
- Standardized follow-up protocols are essential for early detection and improved outcomes in VLBW infants.
Objective:
To determine the impact of a referral protocol for very low birth weight (VLBW) infants and document the incidence rate of late onset hearing loss.
Study Design:
Retrospective study (2003-2015) of post-discharge hearing outcomes and risk factors in the VLBW infant population, before and after the institution of a standardized follow-up program. Risk factors were compared between cases and matched controls.
Results:
Late onset hearing loss detection increased from 2.2 per 100 VLBW infants to 6.9 per 100 post standardization. The follow-up compliance rate nearly doubled. The age at diagnosis decreased from 31 to 12 months postnatal age. The detection of conductive loss increased four-fold, while sensorineural hearing loss remained unchanged.
Conclusion:
A significant proportion late onset hearing loss in VLBW infants is conductive, which can negatively impact speech and language development. A standardized process is essential for early detection and optimal outcomes.
