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Hearing preservation with introperative electrophysiologic monitoring in microvascular decompression for hemifacial spasm

Hearing preservation with introperative brainstem auditory evoked potential monitoring in microvascular decompression for hemifacial spasm

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR-INR-16010022
Enrollment
Unknown
Registered
2016-11-27
Start date
2017-01-01
Completion date
Unknown
Last updated
2017-04-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hemifacial spasm

Interventions

Electric skull drill with nimodipine (Stage II):Nimodipine injection
Electric skull drill without nimodipine (Stage II):None
Manual skull drill with nimodipine (Stage II):Nimodipine injection
Manual skull drill without nimodipine (Stage II):None
Waiting (Stage III):Waiting for recovery
Warm saline irrigation (Stage III):Warm saline irrigation
Warm saline with nimodipine irrigation (Stage III):Warm saline with nimodipine irrigation
observation (Stage I):None

Sponsors

China-Japan Friendship Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 75 Years

Inclusion criteria

Inclusion criteria: 1. Patients with primary hemifacial spasm; 2. Aged 18 to 75 years old; 3. Preoperative ipsilateral auditory testing revealing the average hearing threshold less than 30dB; 4. No operative contraindications, accept the microvascular decompression for the first time; 5. Sign the consent form for clinical research.

Exclusion criteria

Exclusion criteria: 1. Operated patients with recurrent hemifacial spasm or with secondary hemifacial spasm; 2. Women during pregnant stage and breast-feed stage; 3. Preoperative ipsilateral auditory testing revealing the average hearing threshold more than 30dB; 4. Patients with low compliance or whom the doctor think can't cooperate in auditory testing; 5. Patients with serious mental disorders.

Design outcomes

Primary

MeasureTime frame
Average hearing threshold in pure tone test;

Secondary

MeasureTime frame
Speech discrimination score;

Countries

China

Contacts

Public ContactYanbing Yu

China-Japan Friendship Hospital

yuyanbing123@126.com+86 13901114963

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026