Objective: To assess bimodal auditory performance in children with a cochlear implant (CI) and contralateral auditory brainstem implant (ABI). Methods: This is a retrospective case review performed at a tertiary referral center. Four patients with cochlear nerve deficiency initially underwent cochlear implantation but were not benefiting from their devices and underwent ABI in the contralateral ear. The main outcome measures included age-appropriate speech perception and production assessments. Results: Three subjects performed better on their auditory perception assessments using both of their devices than with either device alone. One subject had only preliminary outcomes, but subjectively performed best with both devices. Conclusions: We observed continued improvement in CI performance over time, even if no benefit was evident before the decision for ABI. This could suggest that ABI and CI have a synergistic effect, or it could simply be the adaptive ability of the developing brain to utilize the signals coming from these devices. There is preliminary evidence to support choosing the ear contralateral to the CI for an ABI in a pediatric patient with bilateral cochlear nerve deficiency.

Keywords:
Bimodal auditory performance, Auditory brainstem implant, Cochlear implant, Pediatric deafness
1.
Aronoff JM, Landsberger DM: The development of a modified spectral ripple test. J Acoust Soc Am 2013; 134:EL217–EL222.
2.
Colletti V, Fiorino FG, Carner M, Miorelli V, Guida M, Collette L: Auditory brainstem implant as a salvage treatment after unsuccessful cochlear implantation. Otol Neurotol 2004; 25: 485–496.
3.
Colletti V, Carner M, Miorelli V, Guida M, Colletti L, Fiorino F: Auditory brainstem implant (ABI): new frontiers in adults and children. Otolaryngol Head Neck Surg 2005; 133: 126–138.
4.
Colletti L, Zoccante L: Nonverbal cognitive abilities and auditory performance in children fitted with auditory brainstem implants: preliminary report. Laryngoscope 2008; 118: 1443–1448.
5.
Colletti L, Wilkinson EP, Colletti V: Auditory brainstem implantation after unsuccessful cochlear implantation of children with clinical diagnosis of cochlear nerve deficiency. Ann Otol Rhinol Laryngol 2013; 122: 605–612.
6.
Gifford RH, Noble JH, Camarata SM, Sunderhaus LW, Dwyer RT, Dawant BM, Labadie RF: The relationship between spectral modulation detection and speech recognition: adult versus pediatric cochlear implant recipients. Trends Hear 2018; 22: 1–14.
7.
Noij KS, Kozin ED, Sethi R, Shah PV, Kaplan AB, Herrmann B, Remenschneider A, Lee DJ: Systematic review of nontumor pediatric auditory brainstem implant outcomes. Otolaryngol Head Neck Surg 2015; 153: 739–750.
8.
Puram SV, Lee DJ: Pediatric auditory brainstem implant surgery. Otolaryngol Clin North Am 2015; 48: 1117–1148.
9.
Puram SV, Barber SR, Kozin ED, Shah P, Remenschneider A, Herrmann BS, Duhaime AC, Barker FG, Lee DJ: Outcomes following pediatric auditory brainstem implant surgery. Otolaryngol Head Neck Surg 2016; 155: 133–138.
10.
Roland JT, Waltzman SB (eds): Cochlear Implants. New York, Thieme, 2014.
11.
Sennaroğlu L, Ziyal I, Atas A, Sennaroğlu G, Yucel E, Sevinc S, Ozcan OE: Preliminary results of auditory brainstem implantation in prelingually deaf children with inner ear malformations including severe stenosis of the cochlear aperture and aplasia of the cochlear nerve. Otol Neurotol 2009; 30: 708–715.
12.
Sennaroğlu L, Sennaroğlu G, Yücel E, Bilginer B, Atay G, Bajin MD, Mocan BÖ, Yaral M, Aslan F, Çnar BÇ, et al: Long-term results of ABI in children with severe inner ear malformations. Otol Neurotol 2016; 37: 865–872.
13.
Shah PV, Kozin ED, Kaplan AB, Lee DJ: Pediatric auditory brainstem implant surgery: a new option for auditory habilitation in congenital deafness? J Am Board Fam Med 2016; 29: 286–288.
14.
Wilkinson EP, Eisenberg LS, Krieger MD, Schwartz MS, Winter M, Glater JL, Martinez AS, Fisher LM, Shannon RV: Initial results of a safety and feasibility study of auditory brainstem implantation in congenitally deaf children. Otol Neurotol 2017; 38: 212–220.
15.
Young NM, Kim FM, Ryan ME, Tournis E, Yaras S: Pediatric cochlear implantation of children with eighth nerve deficiency. Int J Pediatr Otorhinolaryngol 2012; 76: 1442–1448.
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2018
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