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The effect of bone vibrator coupling method on the neonate auditory brainstem response
Andrew Stuart1, Hannah M Nelson1
1a Department of Communication Sciences and Disorders , East Carolina University , Greenville , NC , USA.
International Journal of Audiology
|March 10, 2019
Summary
Bone vibrator coupling significantly impacts neonate auditory brainstem response (ABR) results. Consistent coupling methods are crucial for accurate ABR assessments in infants.
Area of Science:
- Audiology
- Neuroscience
- Pediatric Medicine
Background:
- Auditory Brainstem Response (ABR) is vital for assessing infant hearing.
- Bone-conducted stimuli are used in ABR, but coupling methods may influence results.
- Standardizing bone vibrator coupling is essential for reliable neonatal ABR testing.
Purpose of the Study:
- To investigate the impact of three distinct bone vibrator coupling methods on neonatal Auditory Brainstem Response (ABR).
Main Methods:
- A repeated measures design was used with 26 healthy full-term neonates.
- Three coupling techniques (hand-held, hand-held force gauge, elastic band) were tested.
- Bone-conducted 30 dB nHL 4000 Hz CE-Chirp stimuli were applied to the temporal bone.
Main Results:
- Coupling method significantly affected wave V latency and amplitude (p < 0.001).
- Hand-held coupling resulted in longer wave V latency and smaller amplitude compared to elastic band and force gauge.
- No significant difference was found between elastic band and hand-held force gauge coupling methods.
Conclusions:
- Bone vibrator coupling significantly influences neonatal ABR outcomes.
- Clinicians must maintain consistent coupling techniques for reliable ABR assessments.
- Standardization of coupling is recommended for pediatric ABR evaluations.
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