VSB for unilateral conductive or mixed hearing loss
- Conditions
- nilateral conductive hearing loss or Mixed hearing loss
- Registration Number
- JPRN-jRCTs032190002
- Lead Sponsor
- Suzuki Hiroaki
- Brief Summary
In this study, we treated four patients with unilateral conductive or mixed hearing loss patients by using VSB. As a result, the hearing thresholds for all patients improved dramatically after VSB fitting from 67.2 dB HL to 25.6 dB HL. Monosyllable perception score in noise condition and sound localization score were also improved but did not show statistical significance.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Complete
- Sex
- All
- Target Recruitment
- 5
General inclusion criteria
1)Written informed consent was obtained from patient (or their guardians if they are minor).
2)The age of informed consent was 4 years old or above.
Audiometric inclusion criteria
1)Unilateral conductive hearing loss or mixed hearing loss.
2)Patient fulfill the below bone conduction hearing thresholds.
500Hz:45dB or less
1000Hz:50dB or less
2000Hz:65dB or less
4000Hz:65dB or less
1) Patients with highly malformation of cochlear or temporal bones.
2) Patients do not use general anesthesia.
Study & Design
- Study Type
- Interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method The therapeutic effects are evaluated at 12 month after VSB surgery using free field audiometry. 20dB or more threshold recovery regarded as effective cases.
- Secondary Outcome Measures
Name Time Method Inner and after surgery safeness and adverse event in the observation period.