The Effect of Intracochlear and Intratympanic Dexamethasone on Cochlear Implant Impedance.

Local dexamethasone applications had a potentially positive impact on the impedance of the basal and middle regions. Patients had lower impedances than the control group during follow-up and at the endpoint. The increase in the apical region may indicate that dexamethasone was not reaching the apical zone in local applications.