Korean J Otorhinolaryngol-Head Neck Surg.  2018 Dec;61(12):650-657. 10.3342/kjorl-hns.2017.00913.

Early Linguistic Developments of Simultaneous Bilateral Cochlear Implantees

• Suh MJ
• Lee HJ
• Choi HS

• KMID: 2430842
• DOI: http://doi.org/10.3342/kjorl-hns.2017.00913

Abstract

BACKGROUND AND OBJECTIVES
The present study aimed to compare receptive and expressive language development in children who have undergone simultaneous bilateral cochlear implantation (SCI) and those who have undergone bimodal stimulation (unilateral CI+ hearing aid).
SUBJECTS AND METHOD
In a retrospective analysis of clinical data, 15 pediatric patients who have received SCI and nine patients who have received bimodal stimulation (BM group) were enrolled. CI was performed for all patients at 24 months of age. Category of Auditory Performance (CAP) scores, Infant-Toddler Meaningful Auditory Integration Scale (IT-MAIS) scores, and developmental quotients (DQ) for expressive and receptive language were compared between the groups at 12 month of follow-up. The Percentage of Consonants Correct (PCC) of children evaluated at 4 years old was also compared.
RESULTS
At 12 months of follow-up, significantly greater improvements in CAP scores (Δ4.25±0.5) were noted in the SCI group compared to the BM group (Δ3.56±0.88, p=0.041). Significantly greater improvements in IT-MAIS scores were also noted in the SCI group (Δ36.17±4.09) than in the BM group (Δ30.17±2.91, p=0.004). The DQ of receptive language was higher in the SCI group than in the BM group (87.6±15.4% vs. 75.5±12.0%, p=0.023) at 12 months of follow-up. Moreover, early SCI was associated with better receptive language skills. PCC index of children at 4 years old was higher in the SCI group than in the BM group (88.5±13.2% vs. 62±15.8%, p=0.014). Earlier SCI was associated with even greater improvements.
CONCLUSION
Bilateral SCI is associated with significant improvements in language development when compared with bimodal stimulation. Earlier SCI was associated with better outcomes.

Keyword

Category of Auditory Performance; Cochlear implantation; Infant-Toddler Meaningful Auditory Integration Scale; Percentage of consonants correct; Sequenced Language Scale for Infant

MeSH Terms

Child
Cochlear Implantation
Cochlear Implants
Follow-Up Studies
Hearing
Humans
Language Development
Linguistics*
Methods
Retrospective Studies