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Updated: Aug 30, 2025
Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
Comparison of Outcomes in Unilateral and Bilateral Pediatric Cochlear Implants: Our Experience
Amit Kumar Anand1,2,3, Neeraj Suri1,4, Jayachandran Ganesh1,2
1Department of Otolaryngology, GMERS Medical College and Civil Hospital, Gandhinagar, Gujarat India.
Insights
Bilateral cochlear implants, especially when implanted simultaneously, significantly improve auditory skills in children compared to unilateral implants. Simultaneous surgery also offers benefits like reduced surgical time and hospital stay.
Area of Science:
- Audiology
- Pediatric Otolaryngology
- Neurosurgery
Background:
- Cochlear implantation is a crucial intervention for pediatric hearing loss.
- Unilateral versus bilateral and simultaneous versus sequential implantation strategies require comparative outcome analysis.
Purpose of the Study:
- To compare auditory outcomes between unilateral and bilateral cochlear implants in pediatric patients.
- To evaluate differences between simultaneous and sequential bilateral cochlear implant surgeries.
Main Methods:
- Retrospective study of 83 children (12 months to 2.5 years) with unilateral (n=42) or bilateral (n=41) cochlear implants.
- Bilateral cases included simultaneous (n=21) and sequential (n=20) surgeries.
- Auditory skills (CAP, SIR, localization, speech in noise, traffic noise) assessed over 4 years; surgical metrics also recorded.
Main Results:
- Children with bilateral simultaneous implants showed significantly better performance in CAP, SIR, localization, speech in noise, and traffic noise scores compared to sequential bilateral and unilateral implants.
- Simultaneous surgery was associated with reduced surgical time, operating room time, and shorter inpatient stays.
- Bilateral implants demonstrated superior auditory perception and spontaneous speech development versus unilateral implants.
Conclusions:
- Simultaneous bilateral cochlear implantation is a safe and effective option for pediatric patients, yielding superior auditory outcomes.
- Bilateral cochlear implantation generally outperforms unilateral implantation in pediatric auditory development.
Abstract:
The aim of our study is to compare the outcomes in unilateral and bilateral cochlear implants in pediatric age and also between simultaneous and sequential cochlear implant surgery. This retrospective study was carried out with 83 children aged between 12 months to 2.5 years which included 41 children with bilateral Cochlear implants and 42 with unilateral implants. Out of these 41 children, 21 were simultaneous and 20 were sequential cochlear implant. All the children were operated at civil hospital Gandhinagar, Gujarat, India. CAP, SIR, localization, traffic noise and speech in noise scores were assessed at regular intervals over the period of 4 years. Also the drug administration time, surgical time, operating room time were assessed for simultaneous and sequential cochlear implant surgery. Children with bilateral simultaneous implants fared significantly better with CAP, SIR, localization, speech noise and traffic noise scores than sequential bilateral implants and unilateral implants with a significant difference of means t tests between the two groups. Simultaneous cochlear implant surgery is associated with reduced surgical time, operating room time, it shortens the total in patient stay. There is less of drug administration and bilateral ones are stimulated simultaneously. Bilateral cochlear implants perform better with respect to auditory perception skills and spontaneous speech when compared with unilateral implants, but simultaneous surgery is better and safe option for pediatric cochlear implantation.
