The objective of the present study is to investigate the effect dexamethasone and hyaluronic acid have on hearing preservation
Many efforts have been made to prevent residual hearing loss after cochlear implantation, such as the development of soft surgical techniques and pharmacological protection. In this study we investigate whether the topical application of dexamethasone and hyaluronic acid prevents residual hearing loss.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
18
Cochlear implantation using Hybrid L24 Implant
Cochlear implantation using Hybrid L24 Implant,dexamethasone (4mg/ml) in the round window
Cochlear implantation using Hybrid L24 Implant,dexamethasone (4mg/ml) in the round window and hyaluronic acid (10mg/ml) in the electrode array
University of São Paulo General Hospital
São Paulo, São Paulo, Brazil
Hearing thresholds
Hearing thresholds will be measured by audiometry in the frequencies 125, 250, 500, 1000, 2000 and 4000 Hz in the preoperatory, 1 month, 3 months and 6 months after the surgery.
Time frame: within the first 6 months after surgery
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