Same-Day Cochlear Implant Activation (SDA-CI)

This randomized controlled study investigates whether activating a cochlear implant on the day of surgery (same-day activation) leads to faster stabilization of cochlear implant programming compared with the current standard practice of activation approximately 14 days after surgery. Adult cochlear implant recipients at Aarhus University Hospital will be randomly assigned to either same-day activation or standard activation. The study will evaluate electrode impedance development, time to a stable cochlear implant map, changes in programming parameters, hearing outcomes, tinnitus, quality of life, rehabilitation progress, and safety. The purpose of the study is to determine whether earlier activation can facilitate faster auditory rehabilitation and optimization of cochlear implant settings without increasing complications or patient discomfort.

Inclusion Criteria: * Age 18 years or older * Indication for cochlear implantation according to national guidelines * Ability to provide written informed consent Exclusion Criteria: - Medical or surgical conditions rendering SDA unsuitable, including postoperative wound complications requiring pressure dressing, cognitive or communicative barriers precluding safe activation, or other clinical considerations (e.g. meningitis) assessed by the treating clinician. \-