Evaluation of Speech-in-noise Performance in Cochlear Implant Recipients With a CROS Device on the Contralateral Ear

Not Applicable

Completed

Conditions: Hearing Loss, Sensorineural

Interventions: Device: CROS
Device: Hearing Aid
Other: Cochlear Implant Alone

Registration Number: NCT03867396

Lead Sponsor: University of Colorado, Denver

Brief Summary: Speech understanding in noise remains the greatest challenge for people using cochlear implants, particularly when the speech of interest comes from the side of the head opposite to the implant. Recent findings in hearing technology allow for people to either use a hearing aid or a Contralateral Routing of Signal (CROS) device on the non-implanted ear. Differences in speech understanding may result depending on the device chosen by a person, and these differences may be measureable through speech discrimination measurement methods.

This study intends to determine whether or not a CROS device improves speech perception in noise when the source of the speech of interest originates from the side of the head opposite to the implant.

Detailed Description: Not available

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 40

Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

Study Type: INTERVENTIONAL

Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Cochlear Implant and CROS	CROS	Subject wears the CROS device on the contralateral side of the cochlear implant. Subject will use a clinic-loaned CROS device.
Cochlear Implant and Hearing Aid	Hearing Aid	Subject wears a hearing aid on the contralateral side of the cochlear implant. Subject will use a clinic-loaned Naida hearing aid for listening tests.
Cochlear Implant alone	Cochlear Implant Alone	Subject only uses the cochlear implant; hearing on the contralateral side is unaided.

Primary Outcome Measures

Name	Time	Method
Cochlear Implant: Signal to Noise Ratio (SNR) Threshold Obtained From IEEE (Speech Perception in Noise Test) Sentence in Noise Test.	12 minutes	The IEEE test allows a researcher to evaluate how well a subject understands sentences in noisy situations. Primary Outcome #1 will assess how well the listener can hear with his/her cochlear implant. The listener will be tested without a contralateral device versus also wearing a contralateral device while listening to sentences coming from various directions along with competing noise coming from various directions. The directions of the sentences or noise are as follows: * Omni: from all directions * Ipsi: the same side * Front * Contra: Contralateral, from the opposite side of the implant Visits are flexible, based on participant preference and may be completed any time between enrollment and end of study. Testing takes about 12 minutes.
CI CROS: Signal to Noise Ratio (SNR) Threshold Obtained From IEEE (Speech Perception in Noise Test) Sentence in Noise Test.	12 minutes	The IEEE test allows a researcher to evaluate how well a subject understands sentences in noisy situations. Primary Outcome #2 will assess how well the listener can hear wearing his/her cochlear implant and a CROS (Contralateral Routing of Signals device). A CROS is a device on the opposite ear that sends the nose to the cochlear implant. The listener will be tested without a contralateral device versus also wearing a contralateral device while listening to sentences coming from various directions along with competing noise coming from various directions. The directions of the sentences or noise are as follows: * Omni: from all directions * Ipsi: the same side * Front * Contra: Contralateral, from the opposite side of the implant Visits are flexible, based on participant preference and may be completed any time between enrollment and end of study. Testing takes about 12 minutes.
CI HA: Signal to Noise Ratio (SNR) Threshold Obtained From IEEE (Speech Perception in Noise Test) Sentence in Noise Test.	12 minutes	The IEEE test allows a researcher to evaluate how well a subject understands sentences in noisy situations. Primary Outcome #3 will assess how well the listener can hear wearing his/her cochlear implant and hearing aid. The listener will be tested without a contralateral device versus also wearing a contralateral device while listening to sentences coming from various directions along with competing noise coming from various directions. The directions of the sentences or noise are as follows: * Omni: from all directions * Ipsi: the same side * Front * Contra: Contralateral, from the opposite side of the implant Visits are flexible, based on participant preference and may be completed any time between enrollment and end of study. Testing takes about 12 minutes.