Versorgung mit Cochlear Implantaten

Müller-Deile, J.

doi:10.1055/s-2004-835862

Cited by 5 publications

(3 citation statements)

References 18 publications

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“…This aetiological category includes hypoxia, which can cause severe global brain damage with impaired cognition [58]. In contrast to the findings presented above, early intervention in the first year of life is the preferred and generally accepted intervention [2,43]. The increase in the risk of a poor outcome, as found in this study, was probably due to the association between congenital aetiology and late treatment (after 18 years of age), as well as hypoxic events.…”

Section: Prediction and Risk Factorsmentioning

confidence: 54%

“…For the NRSmax (ρ = 0.14) and the SRT (ρ = 0.16) the correlations with the postoperative outcome WRS70(CI) were weaker than for WRS80(HA) and WRSmax. While the final binary logistic model explained part of the postoperative variation using NRSmax, it should be noted that two-digit number comprehension is not a sufficient indicator of the overall benefit of cochlear implantation in daily life, as pointed out by Müller-Deile [43], because 100% two-digit number comprehension can often be expected at the initial CI fitting. However, with each new piece of relevant information, it is possible to develop a more comprehensive model that explains a significant portion of the variability in postoperative speech comprehension.…”

Section: Speech Comprehensionmentioning

confidence: 92%

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Extended Preoperative Audiometry for Outcome Prediction and Risk Analysis in Patients Receiving Cochlear Implants

Rieck,

Beyer,

Mewes

et al. 2023

JCM

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Background: The outcome of cochlear implantation has improved over the last decades, but there are still patients with less benefit. Despite numerous studies examining the cochlear implant (CI) outcome, variations in speech comprehension with CI remains incompletely explained. The aim of this study was therefore to examine preoperative pure-tone audiogram and speech comprehension as well as aetiology, to investigate their relationship with postoperative speech comprehension in CI recipients. Methods: A retrospective study with 664 ears of 530 adult patients was conducted. Correlations between the target variable postoperative word comprehension with the preoperative speech and sound comprehension as well as aetiology were investigated. Significant correlations were inserted into multivariate models. Speech comprehension measured as word recognition score at 70 dB with CI was analyzed as (i) a continuous and (ii) a dichotomous variable. Results: All variables that tested preoperative hearing were significantly correlated with the dichotomous target; with the continuous target, all except word comprehension at 65 dB with hearing aid. The strongest correlation with postoperative speech comprehension was seen for monosyllabic words with hearing aid at 80 dB. The preoperative maximum word comprehension was reached or surpassed by 97.3% of CI patients. Meningitis and congenital diseases were strongly negatively associated with postoperative word comprehension. The multivariate model was able to explain 40% of postoperative variability. Conclusion: Speech comprehension with hearing aid at 80 dB can be used as a supplementary preoperative indicator of CI-aided speech comprehension and should be measured regularly in the clinical routine. Combining audiological and aetiological variables provides more insights into the variability of the CI outcome, allowing for better patient counselling.

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Section: Prediction and Risk Factorsmentioning

confidence: 54%

Section: Speech Comprehensionmentioning

confidence: 92%

Extended Preoperative Audiometry for Outcome Prediction and Risk Analysis in Patients Receiving Cochlear Implants

Rieck,

Beyer,

Mewes

et al. 2023

JCM

View full text Add to dashboard Cite

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“…Especially in the case of young children, the programming of the CI speech processor is a challenging task since these patients are often not able to report reliable threshold (T) and comfort loudness (C) levels [Müller-Deile, 2004]. The Neural Response Telemetry (NRT) [Dillier et al, 2002] provides access to the electrically evoked compound action potential (ECAP) and by this to the measurement of the amplitude growth function (AGF) and the auditory nerve's refractory properties.…”

Section: Introductionmentioning

confidence: 99%

Measuring the Refractoriness of the Electrically Stimulated Auditory Nerve

et al. 2006

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Intracochlear recordings in cochlear implant recipients provide access to the electrically evoked compound action potential (ECAP). ECAP thresholds are potential predictors of speech processor map’s threshold and comfortable loudness levels. The auditory nerve’s refractory properties can influence these levels due to high-rate stimulation with interpulse intervals within the relative refractory period. Recovery functions were investigated at 84 stimulation sites in 14 Nucleus CI24 recipients using neural response telemetry and a modified forward masking technique. This technique introduces a reference masker-probe interval (MPI). In our study, an appropriate value between 300 and 375 µs was determined for this reference MPI, and the use of a reference MPI of 300 µs is suggested for recovery and amplitude growth functions. A median absolute refractory period of about 390 µs and a median time constant of about 425 µs were obtained by fitting an exponential model to the data. Hence, the auditory nerve is usually in relative refractory state when standard neural response telemetry forward masking is selected because of its default MPI of 500 µs. This can bias the measurement of ECAP thresholds. Additionally, the shape of standard forward masking recovery functions was explained by the influence of latency shift of the neural response.

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Hörsystemversorgung bei Kindern und Jugendlichen

Hoffmann

Schäfer

2020

Kindliche Hörstörungen

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Versorgung mit Cochlear Implantaten

Cited by 5 publications

References 18 publications

Extended Preoperative Audiometry for Outcome Prediction and Risk Analysis in Patients Receiving Cochlear Implants

Extended Preoperative Audiometry for Outcome Prediction and Risk Analysis in Patients Receiving Cochlear Implants

Measuring the Refractoriness of the Electrically Stimulated Auditory Nerve

Hörsystemversorgung bei Kindern und Jugendlichen

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