Insertion Depth and Cochlear Implant Speech Recognition Outcomes: A Comparative Study of 28- and 31.5-mm Lateral Wall Arrays
Objectives:
1) To compare speech recognition outcomes between cochlear implant (CI) recipients of 28- and 31.5-mm lateral wall electrode arrays, and 2) to characterize the relationship between angular insertion depth (AID) and speech recognition.
Study Design:
Retrospective review.
Setting:
Tertiary academic referral center.
Patients:
Seventy-five adult CI recipients of fully inserted 28-mm (n = 28) or 31.5-mm (n = 47) lateral wall arrays listening with a CI-alone device.
Interventions:
Cochlear implantation with postoperative computed tomography.
Main Outcome Measures:
Consonant-nucleus-consonant (CNC) word recognition assessed with the CI-alone at 12 months postactivation.
Results:
The mean AID of the most apical electrode contact for the 31.5-mm array recipients was significantly deeper than the 28-mm array recipients (628° vs 571°, p
Source: Otology and Neurotology - Category: ENT & OMF Tags: COCHLEAR IMPLANTS Source Type: research