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CompletedNCT01588925Updated Oct 3, 2014

Hearing Preservation Using Dexamethasone and Hyaluronic Acid for Cochlear Implantation

A Phase 2 interventional study of Cochlear Implantation and Cochlear Implantation+dexamethasone in Hearing Loss, sponsored by University of Sao Paulo General Hospital. Completed at 1 site in Brazil. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2014-10-03.

Sponsored by University of Sao Paulo General Hospital · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
18
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Study summary

The objective of the present study is to investigate the effect dexamethasone and hyaluronic acid have on hearing preservation

Read the detailed description

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.

02

Conditions studied

  • Hearing Loss

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Keywords

  • Cochlear implantation
  • Dexamethasone
  • Acid, Hyaluronic
03

In context

Hearing Loss

1,092 studies on the registry are indexed under Hearing Loss; 235 are open to participants now.

This study's enrollment of 18 is below the median of 40 across 764 interventional studies indexed under Hearing Loss.

Browse Hearing Loss studies →

Lead sponsor

University of Sao Paulo General Hospital is the lead sponsor of 595 studies on the registry; 98 are open to participants now.

Of its 8 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Adults (greater than 18 years old) with severe/profound, bilateral sensorineural hearing loss with indication of cochlear implantation.
  • Hearing thresholds better than 80 dB in 125 Hz, 90 dB in 250Hz and 100 dB in 500, 1000, 2000, 3000 and 4000 Hz in at least 3 of these frequencies

Exclusion criteria

Exclusion Criteria:

  • Malformation or cochlear ossification
  • Developmental Disabilities
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
18 participants (actual)

Study arms

  • Experimental
    Control group

    Cochlear Implantation

    Device: Cochlear Implantation

  • Active comparator
    Dexamethasone

    Cochlear implantation using topical dexamethasone

    Device: Cochlear Implantation · Drug: Cochlear Implantation+dexamethasone

  • Active comparator
    Dexamethasone+Hyaluronic acid

    Cochlear implantation using topical dexamethasone associated with hyaluronic acid

    Device: Cochlear Implantation · Drug: Cochlear Implantation+dexamethasone+hyaluronic acid

Interventions

  • DeviceCochlear Implantation

    Cochlear implantation using Hybrid L24 Implant

    Also known as: Hybrid L24 Implant

  • DrugCochlear Implantation+dexamethasone

    Cochlear implantation using Hybrid L24 Implant,dexamethasone (4mg/ml) in the round window

    Also known as: Hybrid L24 Implant, Dexamethasone (4mg/ml)

  • DrugCochlear Implantation+dexamethasone+hyaluronic acid

    Cochlear implantation using Hybrid L24 Implant,dexamethasone (4mg/ml) in the round window and hyaluronic acid (10mg/ml) in the electrode array

    Also known as: Hybrid L24 Implant, Dexamethasone (4mg/ml), Hyaluronic acid (10mg/ml)

06

What researchers measure

Primary outcomes

  1. 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

07

Study locations

1 site
  • University of São Paulo General Hospital
    São Paulo, Brazil
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 3, 2014, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT01588925
Lead sponsor
University of Sao Paulo General Hospital
Responsible party
Sponsor
First posted
May 1, 2012
Start date
Nov 2011
Primary completion
Feb 2013
Completion
Jan 2014
Last update
Oct 3, 2014

Study contacts

Bernardo F Ramos
principal investigator · University of São Paulo General Hospital
Rubens V Brito Neto
study director · University of São Paulo General Hospital

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2013. You cannot join it, but the record below documents what was studied.

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