Auditory Outcomes of Cochlear Implantation among Pediatric Patients under the Philippine National Cochlear Implant Program

Abstract

Background. The National Cochlear Implant Program (NCIP) is a national program to address the increasing prevalence of hearing loss, especially in the pediatric population here in the Philippines. In its pilot implementation, it included three tertiary hospitals to represent Luzon, Visayas, and Mindanao and was able to enroll 20 patients who successfully underwent cochlear implantation.

Objectives. The aim of this study is to evaluate the auditory outcomes of the patients who underwent cochlear implantation under the NCIP using the Parents' Evaluation of Aural/Oral Performance of Children (PEACH) Questionnaire and Categories of Auditory Performance (CAP) score questionnaire.

Methods. The study included all recipients of the cochlear implants, under NCIP from December 2019 to December 2021, except 1 with incomplete data during the course of his followup. The outcomes measured included the PEACH Questionnaire score and CAP Questionnaire score and were compared on various factors which included patient's sex and age, parents'  socioeconomic status, duration of hearing aid use prior to CI, pre CI imaging findings and CI electrode placement using nonparametric statistical tests .

Results. The mean PEACH score of the 19 patients was 53.59% ± 12.76% (range: 30% - 75%) while the mean CAP score was 3.16 ± 1.04 (range: 1 - 4.3). Parents of the included patients who have a higher educational background and those in which the electrode was located on the ideal location, scala tympani, have a statistically significant higher PEACH score (p-value of 0.017 and 0.012, respectively). In comparing the CAP scores, those who have unremarkable or normal preoperative imaging have a statistically significant higher score (p-value 0.013)

Conclusion. Patients who had normal preoperative imaging, proper placement of electrodes and those patients with parents belonging to a higher educational background had statistically significant better auditory outcomes after cochlear implantation. Patients who had the cochlear implantation before 36 months of age and hearing aid use of 7 to 18 months prior to cochlear implantation had higher PEACH and CAP scores, however these were not statistically significant. Further studies with a larger sample size is recommended.