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Electric auditory brain stem response in pediatric patients with cochlear implants
T P Nikolopoulos1, S M Mason, G M O'Donoghue
1Otorhinolaryngology Department, Queen's Medical Centre, Nottingham University Hospital, U.K.
Insights
Four new electrical auditory brain stem response (EABR) parameters objectively measure cochlear implant function. These EABR metrics provide a standardized method for comparing results across studies and centers.
Area of Science:
- Audiology
- Neuroscience
- Biomedical Engineering
Background:
- Electrical auditory brain stem response (EABR) is crucial for assessing auditory pathway function.
- Objective measurement of EABR input-output function is needed for consistent clinical evaluation.
Purpose of the Study:
- To introduce four novel EABR parameters for objective input-output function measurement.
- To establish a standardized basis for comparing EABR studies in cochlear implant research.
Main Methods:
- EABR recordings were obtained from 106 ears of 53 children undergoing cochlear implantation.
- Electrical stimulation was applied at the promontory during surgery under anesthesia.
Main Results:
- Clearly defined EABR responses were obtained in 81 out of 106 ears (76.4%).
- A package of four comprehensive parameters (slope, maximal slope, relative growth rate, maximal relative growth rate) was developed.
- Detailed calculation methods for these parameters are provided.
Conclusions:
- The new EABR parameters offer objective quantification of the input-output function.
- These parameters can enhance the consistency of subjective EABR evaluations.
- Standardized EABR metrics will facilitate inter-center comparisons and advance cochlear implant research.
Objective:
To introduce four comprehensive electrical auditory brain stem response (EABR) parameters that objectively measure the input-output function and may be the base of comparison in related studies.
Materials And Methods:
In 53 children (106 ears), recordings of the EABR evoked by electrical stimulation at the promontory were made at the time of surgery after the child was anesthetized and before cochlear implantation.
Results:
Of the 106 ears studied, 81 (76.4%) produced clearly defined responses. These responses were used to develop a package of four comprehensive EABR parameters (slope, maximal slope, relative growth rate, and maximal relative growth rate) that measure objectively the input-output function. The methods of calculation are described in detail.
Conclusion:
These parameters may help us to refine and make more consistent the subjective EABR evaluation. They will also enable a comparison of the results from different cochlear implant centers and promote the progress of related research.