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Cervical and ocular vestibular-evoked myogenic potentials induced by bone conduction in the pediatric group:
Deniz Uğur Cengi̇z1, Sanem Can Sarioğlu1, Buşra Mazooğlu2
1Department of Audiology, Faculty of Health Sciences, Inonu University, Malatya, Türkiye.
Insights
Vestibular-Evoked Myogenic Potential (VEMP) tests using bone conduction are reliable for pediatric vestibular assessment. This study established normative values and confirmed test-retest reliability for cervical and ocular VEMP in children.
Area of Science:
- Audiology
- Neuroscience
- Pediatrics
Background:
- Vestibular-Evoked Myogenic Potential (VEMP) testing is crucial for assessing vestibular function.
- Bone conduction stimuli are preferred for pediatric VEMP due to frequent conductive pathologies.
- Establishing normative data is essential for accurate interpretation in pediatric populations.
Purpose of the Study:
- To establish normative values for pediatric VEMP using bone-conduction stimuli at various frequencies (250 Hz, 500 Hz, 750 Hz).
- To evaluate the test-retest reliability of these VEMP measures in healthy children.
- To provide reliable diagnostic tools for pediatric vestibular disorders.
Main Methods:
- A descriptive study involving 37 healthy children aged 8-18 years.
- Cervical and ocular VEMP tests were performed using bone-conduction stimuli (250 Hz, 500 Hz, 750 Hz).
- Test-retest reliability was assessed by two clinicians one week apart, analyzing latencies, amplitudes, and asymmetry values using parametric tests and ICC.
Main Results:
- Intraclass correlation coefficient (ICC) values indicated good to excellent reliability for both cervical and ocular VEMP across tested frequencies.
- ICC values for cervical VEMP ranged from 0.50 to 0.87.
- ICC values for ocular VEMP ranged from 0.60 to 0.84, demonstrating consistent results.
Conclusions:
- Cervical and ocular VEMP tests utilizing bone-conduction stimuli demonstrate significant reliability in pediatric populations.
- These findings support the use of bone-conduction VEMP as a dependable method for evaluating pediatric vestibular system integrity.
- The established normative values and reliability data aid in diagnosing vestibular impairments in children.
Background:
It is better to perform the VEMP test with bone conduction stimulus in the pediatric group, where conduction-type pathologies can be frequently observed.
Aim:
This study aimed to establish normative values of the Vestibular-Evoked Myogenic Potential (VEMP) test in pediatric individuals using bone-conduction stimuli at different frequencies (250 Hz, 500 Hz, 750 Hz) and to evaluate its test-retest reliability.
Materials And Methods:
This study employed a descriptive design and included 37 healthy individuals aged 8-18 years. Cervical VEMP and ocular VEMP tests were conducted using a B-71 bone vibrator that delivered tone-burst stimuli at frequencies of 250, 500, and 750 Hz at 60 dB nHL. The first test was administered by one clinician, and the second test was conducted by another clinician one week later. Test-retest analysis evaluated wave latencies, interlatencies, amplitudes, and amplitude asymmetry values. Since the data showed normal distribution, parametric tests were used; within-group comparisons were analyzed with paired t-tests, between-group comparisons with independent t-tests, and ICC values were calculated to assess reliability.
Results:
In cervical VEMP using bone-conduction stimuli, the intraclass correlation coefficient (ICC) values for the assessment parameters ranged from 0.60 to 0.87 at 250 Hz, from 0.54 to 0.74 at 500 Hz, and from 0.50 to 0.78 at 750 Hz. In ocular VEMP using bone-conduction stimuli, the ICC values ranged from 0.60 to 0.84 at 250 Hz, from 0.68 to 0.84 at 500 Hz, and from 0.65 to 0.79 at 750 Hz.
Conclusion:
Cervical and ocular VEMP tests using bone-conduction stimuli are reliable methods for evaluating the functional integrity of the vestibular system in pediatric populations.
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