Cochlear ImplantationCochlear ImplantsDeafnessHearing Loss, BilateralHearing Loss, SensorineuralHearing LossRound Window, EarSpeech PerceptionAudiometry, Pure-ToneHearing TestsScala TympaniVestibulocochlear Nerve DiseasesLanguage DevelopmentTemporal BoneCorrection of Hearing ImpairmentPersons With Hearing ImpairmentsHearing Loss, CentralCHARGE SyndromePostoperative ComplicationsCochleaHearing Loss, UnilateralAuditory ThresholdTreatment OutcomeAudiometry, Evoked ResponseAudiometrySpeechElectrodes, ImplantedStapes SurgeryCochlear NerveHearing AidsHearingEducation of Hearing DisabledEvoked Potentials, AuditorySpeech IntelligibilitySpiral GanglionConstitution and BylawsChloral HydrateVestibular DiseasesOtologic Surgical ProceduresHearing Loss, SuddenAcoustic StimulationLanguage TestsRetrospective StudiesOtosclerosisChild LanguagePostoperative PeriodSpeech Discrimination TestsAuditory CortexSound LocalizationEmbryo Implantation, DelayedTime FactorsTinnitusMeningitis, PneumococcalEvoked Potentials, Auditory, Brain StemFollow-Up StudiesVocabularyProspective StudiesLens Implantation, IntraocularAuditory PerceptionHair Cells, AuditoryIntraoperative ComplicationsEar, InnerLanguageStentsPregnancyElectric ImpedanceProsthesis DesignPacemaker, ArtificialPatient SelectionParentsUterusProstheses and ImplantsAge FactorsEndometriumEquipment FailureReoperationCardiac Catheterization