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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

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Published on: March 24, 2023

Simplified Matrix Sentence Test for Pediatric Cochlear Implant Fitting: Single Institution Experience.

Giulia Parolin^1,2, Carmela Morizzi², Nader Nassif³

¹Department of Otolaryngology-Head and Neck Surgery, ASST Spedali Civili, University of Brescia, 25100 Brescia, Italy.

Audiology Research

|September 22, 2025

Summary

The Simplified Matrix Sentence Test effectively estimates cochlear implant (CI) performance in children. Results showed post-implant improvements were consistent across various patient demographics and device factors.

Keywords:

children cochlear implants matrix sentence test

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Published on: June 21, 2024

Area of Science:

Audiology
Speech-Language Pathology
Biomedical Engineering

Background:

The Matrix Sentence Test is a reliable audiological tool for assessing speech understanding in noise.
A simplified version is suitable for pediatric use in cochlear implant (CI) evaluations.
Understanding factors influencing CI outcomes is crucial for optimizing patient care.

Purpose of the Study:

To evaluate the Simplified Matrix Sentence Test (SiIMax) for estimating post-CI fitting performance in children.
To determine the influence of demographic and device-specific variables on SiIMax results.

Main Methods:

Retrospective study of 51 pediatric CI patients (ages 7-18) with ≥2 years post-implantation.
SiIMax administered before and after audiological map adjustments.
Analysis of variables including gender, CI manufacturer, implantation details, and age.

Main Results:

The average signal-to-noise ratio (SNR) for 50% sentence comprehension improved post-map adjustment (from -0.83 dB to -2.05 dB).
Univariate and multivariate analyses indicated no statistically significant impact of demographic or device variables on SiIMax outcomes.
The test demonstrated consistent applicability in the study cohort.

Conclusions:

The Simplified Matrix Sentence Test is a broadly applicable tool for pediatric CI users.
Post-cochlear implant fitting improvements in speech understanding in noise appear independent of patient and device characteristics.
SiIMax offers an objective measure for evaluating CI performance in children.