Predicting sequential bilateral cochlear implantation performance in postlingually deafened adults; A retrospective cohort study

dc.contributor.authorSmulders, Yvette E.
dc.contributor.authorHendriks, Thomas
dc.contributor.authorStegeman, Inge
dc.contributor.authorEikelboom, Robert H.
dc.contributor.authorSucher, Cathy
dc.contributor.authorUpson, Gemma
dc.contributor.authorBrowne, Ronel Chester
dc.contributor.authorJayakody, Dona
dc.contributor.authorMaria, Peter L. Santa
dc.contributor.authorAtlas, Marcus D.
dc.contributor.authorFriedland, Peter L.
dc.date.accessioned2018-11-29T06:47:07Z
dc.date.available2018-11-29T06:47:07Z
dc.date.issued2018-12
dc.description.abstractOBJECTIVE : To identify which preoperative patient characteristics influence sequential bilateral cochlear implantation performance and to create a statistical model that predicts benefit. DESIGN : Multicentre retrospective cohort study. SETTING : All patients were operated in four academic teaching hospitals in Perth, Australia, and followed up by audiologists of the Ear Science Institute Australia. PARTICIPANTS : A total of 92 postlingually deafened adult patients who had undergone sequential cochlear implantations between 19 June 1990 and 14 March 2016 were included. Patients were excluded if the 12‐month follow‐up consonant‐nucleus‐consonant (CNC) phoneme score was missing. MAIN OUTCOME MEASURE : The effect of 18 preoperative factors on the CNC phoneme score in quiet (at 65 dB SPL) with the second cochlear implant (CI2) one year after implantation. RESULTS : Two factors were positively correlated to speech understanding with CI2: Wearing a hearing aid (HA) before receiving CI2 (r = 0.46, P = 0.00) and the maximum CNC phoneme score with the first CI (CI1) (r = 0.21, P = 0.05). Two factors were negatively correlated: the length of hearing loss before CI2 in the second implanted ear (r = −0.25, P = 0.02) and preoperative pure tone average (PTA) (0.5, 1, 2 kHz) before CI2 in the second implanted ear (r = −0.27, P = 0.01). The following model could be created: predicted CNC phoneme score with CI2 (%) = 16 + (44 * HA use before CI2 (yes)) − (0.22 * length of hearing loss before CI2 (years)) + (0.23 * CNC phoneme score with CI1 (%)). Because the effect of HA use before implantation played such a major role, we also created a model after exclusion of the HA factor: Predicted CNC phoneme score with CI2 (%) = 82 − (0.17 * length of hearing loss before CI2 (years)) − (0.27 * PTA in second implanted ear before CI2 (0.5, 1, 2 kHz)) + (0.20 * CNC phoneme score with CI1 (%)). CONCLUSION : Advanced age or a long interval between implantations does not necessarily lead to poor CI2 results. Patients who are successful HA users before CI2, who have a low PTA before CI2, a high CNC phoneme score with CI1 and a limited length of hearing loss before CI2, are likely to be successful CI2 recipients.en_ZA
dc.description.departmentSpeech-Language Pathology and Audiologyen_ZA
dc.description.librarianam2018en_ZA
dc.description.uriwileyonlinelibrary.com/journal/coaen_ZA
dc.identifier.citationSmulders YE, Hendriks T, Stegeman I, et al. Predicting sequential bilateral cochlear implantation performance in postlingually deafened adults; A retrospective cohort study. Clinical Otolaryngology. 2018;43:1500–1507. https://DOI.org/ 10.1111/coa.13193.en_ZA
dc.identifier.issn1749-4478 (print)
dc.identifier.issn1749-4486 (online)
dc.identifier.other10.1111/coa.13193
dc.identifier.urihttp://hdl.handle.net/2263/67403
dc.language.isoenen_ZA
dc.publisherWileyen_ZA
dc.rights© 2018 The Authors. Clinical Otolaryngology. Published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License.en_ZA
dc.subjectPatienten_ZA
dc.subjectSequential bilateral cochlearen_ZA
dc.subjectDeafened adulten_ZA
dc.subjectHearing aiden_ZA
dc.subjectBilateralen_ZA
dc.subjectCochlear implantationen_ZA
dc.subjectHearing lossen_ZA
dc.subjectConsonant‐nucleus‐consonant (CNC)en_ZA
dc.titlePredicting sequential bilateral cochlear implantation performance in postlingually deafened adults; A retrospective cohort studyen_ZA
dc.typeArticleen_ZA

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