The Prognostic Value of Promontory Electric Auditory Brain Stem Response in Pediatric Cochlear Implantation

Nikolopoulos, Thomas P.; Mason, Steve; Gibbin, K. P.; O’Donoghue, Gerard M.

doi:10.1097/00003446-200006000-00007

Cited by 59 publications

(30 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other authors [Smith and Simmons, 1983;Kileny and Kemink, 1987;Fifer and Novak, 1991;Nikolopoulos et al, 2000;Mason et al, 1997] prefer the use of electrophysiological recording with study of input/output functions as a predictor of CN survival. Electrophysiological promontory testing has also been criticized for possible lack of sensitivity [Nikolopoulos et al, 2000], and absence of response has not been considered as a contraindication for implantation.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Auditory Brainstem Implant in Posttraumatic Cochlear Nerve Avulsion

Colletti

Carner²,

Miorelli³

et al. 2004

Audiol Neurotol

View full text Add to dashboard Cite

Patients aged over 12 years with neurofibromatosis type 2 are considered candidates for an auditory brainstem implant (ABI). This study extends the indication criteria of ABI to subjects with profound hearing loss due to damaged cochleas and/or cochlear nerves (CNs) following head injuries. In our department, over the period from April 1997 to November 2002, 32 patients, 23 adults and 9 children, were fitted with ABIs. Their ages ranged from 14 months to 70 years. These patients were suffering from a variety of tumor (13 subjects) and nontumor CN or cochlear diseases (19 subjects). Six patients, 5 adults and 1 child, had profound hearing loss following head injury. Their mean age was 25 years (range: 16–48 years). Five were male and 1 female. The retrosigmoid approach was used in all 6 patients. The electrode array was inserted into the lateral recess of the fourth ventricle and correct electrode positioning was monitored with the aid of electrically evoked auditory brainstem responses and neural response telemetry. Correct implantation was achieved in all patients. No complications were observed due to implantation surgery or related to ABI activation and stimulation of the cochlear nuclei. At activation, an average of 9.8 electrodes (range 5–13) were switched on without side effects. One to 6 electrodes were activated in the following sessions after time periods ranging from 2 to 16 months. All patients achieved auditory-alone-mode closed-set word recognition scores ranging from 40 to 100%; 3 had auditory-alone-mode open-set sentence recognition scores of 60–100%; 2 of these even had speech-tracking performance scores of 38 and 43 words, respectively, showing an ability to engage in normal conversation and converse over the phone. The present study demonstrates that the ABI is a useful rehabilitation instrument in subjects with damaged cochleas and/or CN avulsion following head injury who are unamenable or poorly responsive to auditory rehabilitation using cochlear implants.

show abstract

Section: Discussionmentioning

confidence: 99%

“…Electrophysiological promontory testing has also been criticized for possible lack of sensitivity [Nikolopoulos et al, 2000], and absence of response has not been considered as a contraindication for implantation.…”

Section: Discussionmentioning

confidence: 99%

Auditory Brainstem Implant in Posttraumatic Cochlear Nerve Avulsion

Colletti

Carner²,

Miorelli³

et al. 2004

Audiol Neurotol

View full text Add to dashboard Cite

show abstract

“…In clinical practice, assessment of the integrity of the auditory pathways has usually been based on electric response audiometry. However, this approach has serious limitations and has been largely abandoned as a means of discriminating potential candidates for implantation (21). Thus, the development of innovative approaches for evaluating the functionality of the auditory pathways has immediate clinical relevance.…”

Section: Discussionmentioning

confidence: 99%

A method for the direct electrical stimulation of the auditory system in deaf subjects: A functional magnetic resonance imaging study

Alwatban

Ludman

Mason

et al. 2002

Magnetic Resonance Imaging

Self Cite

View full text Add to dashboard Cite

Purpose: To develop a safe functional magnetic resonance imaging (fMRI) procedure for auditory assessment of deaf subjects. Materials and Methods:A gold-plated tungsten electrode has been developed which has zero magnetic susceptibility. Used with carbon leads and a carbon reference pad, it enables safe, distortion-free fMRI studies of deaf subjects following direct electrical stimulation of the acoustic nerve. Minor pickup of the radio frequency (RF) pulses by the electrode assembly is difficult to eliminate, and a SPARSE acquisition sequence is used to avoid any effects of unintentional auditory nerve stimulation. Results:The procedure is demonstrated in a deaf volunteer. Activation is observed in the contralateral but not the ipsilateral primary auditory cortex. This is in sharp contrast to studies of auditory processing in hearing subjects, but consistent with the small number of previous positron emission tomography (PET) and MR studies on adult deaf subjects. Conclusion:The fMRI procedure is able to demonstrate whether the auditory pathway is fully intact, and may provide a useful method for preoperative assessment of candidates for cochlear implantation.

show abstract

“…However, this procedure requires general anesthesia, and CI children with no preoperative auditory brainstem response may perform as well as children with auditory brainstem response [Nikolopoulos et al, 2000]. ECS, on the other hand, is well tolerated by infant CI candidates and avoids repeated general anesthesia which bears risks particularly for children.…”

Section: Introductionmentioning

confidence: 99%

“…ECS is preferentially applied in prelingually deaf children without uti lizable residual hearing who do not show detectable auditory brainstem responses and do not benefit from hearing aids. The presence of ECS responses may also contribute to a positive CI decision in cases of congenital malformations, cochlear nerve dysplasia, suspected aplasia, or narrow internal auditory canal [Nikolopoulos et al, 2000]. Furthermore, patients with an intellectual disability or with multiple handicaps are oc casionally tested with ECS because conventional audiometric tests often do not deliver clear results, and the benefit from hearing aids remains uncertain as well.…”

Section: Introductionmentioning

confidence: 99%

Testing the Diagnostic Value of Electrical Ear Canal Stimulation in Cochlear Implant Candidates by Functional Magnetic Resonance Imaging

Neumann¹,

Preibisch²,

Spreer³

et al. 2008

Audiol Neurotol

View full text Add to dashboard Cite

Prior to cochlear implant (CI) surgery in children, the integrity of the auditory pathway is sometimes assessed by electrical ear canal stimulation (ECS). However, the evaluation of reactions as auditory is subjective. To test the prognostic value of ECS, functional magnetic resonance imaging (fMRI) was performed during ECS vicariously in 18 adult CI candidates. Activation of the primary auditory cortex was detected in 9 of 16 cases when auditory sensations during ECS occurred, and tended to be more bilaterally distributed in CI candidates than in normal-hearing controls. ECS sensations only tended to correlate with fMRI activations. However, solely frequency discrimination during electrical stimulation predicted CI outcome, but neither other auditory sensations nor fMRI activations did so satisfactorily, which limits the diagnostic value of these measures. Instead, preoperative residual hearing (nonamplified and amplified) was a robust predictor for CI benefit.

show abstract

The Prognostic Value of Promontory Electric Auditory Brain Stem Response in Pediatric Cochlear Implantation

Cited by 59 publications

References 15 publications

Auditory Brainstem Implant in Posttraumatic Cochlear Nerve Avulsion

Auditory Brainstem Implant in Posttraumatic Cochlear Nerve Avulsion

A method for the direct electrical stimulation of the auditory system in deaf subjects: A functional magnetic resonance imaging study

Testing the Diagnostic Value of Electrical Ear Canal Stimulation in Cochlear Implant Candidates by Functional Magnetic Resonance Imaging

Contact Info

Product

Resources

About