Objective To evaluate the short-term hearing and speech rehabilitation of unilateral Ultra cochlear im-plantation(CI)and its safety and efficacy in the real world.Methods Patients with bilateral severe to profound sensori-neural hearing loss(n=78)underwent unilateral CI surgery and completed preoperative baseline assessment,evaluation of hearing improvement,speech development and auditory rehabilitation,as well as adverse events during and after the surgery.Follow-ups were scheduled on the day of switch-on and completed at 1 month±7 days,3 months±14 days and 6 months±30 days after activation respectively.Hearing and speech performance before and after the surgery were ana-lyzed using the SPSS 22.0 software.Results Aided hearing thresholds gradually improved along with rehabilitation af-ter activation,and significantly better than unaided preoperative thresholds(x2=1341.97,P＜0.05 for those＜3 years;x2=912.81,P＜0.05 for those 3 to 5 years;and x2=1495.36,P＜0.05 for those 6 years and older,respectively).Speech recog-nition scores also improved along with rehabilitation,especially as compared to preoperative results(x2=239.08,P＜0.05 with monosyllable words and x2=153.66,P＜0.05 with disyllable words for those 3 to 5 years;x2=281.31,P＜0.05 with monosyllable words,x2=152.44,P＜0.05 with disyllable words and x2=197.06,P＜0.05 with sentences for those 6 years and older).No adverse events resulting in withdrawal from the study.Conclusion Patients with bilateral severe to pro-found sensorineural hearing loss can achieve significant speech and hearing performance improvement even within rela-tively short time of unilateral CI use.The real world data from this study provides reliable evidence supporting clinical application of Ultra CI.
real world researchfranchise devicescochlear implantspeech and hearing rehabilitationspeech recognition score
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