Vertigo Perception and Quality of Life in Patients After Surgical Treatment of Vestibular Schwannoma (ITG)

November 14, 2016 updated by: Zdeněk Čada, University Hospital, Motol

Vertigo Perception and Quality of Life in Patients After Surgical Treatment of Vestibular Schwannoma With Pretreatment Prehabituation by Chemical Vestibular Ablation

Surgical removal of vestibular schwannoma causes acute vestibular symptoms, including postoperative vertigo and oscilopsia due to nystagmus. In general, the dominant symptom postoperatively is vertigo. Preoperative chemical vestibular ablation can reduce vestibular symptoms postoperatively.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Surgical removal of vestibular schwannoma causes acute vestibular symptoms, including postoperative vertigo and oscilopsia due to nystagmus. In general, the dominant symptom postoperatively is vertigo. Preoperative chemical vestibular ablation can reduce vestibular symptoms postoperatively. We used 1.0 ml of 40 mg/ml nonbuffered gentamicin in three intratympanic installations over 2 days, 2 months preoperatively in 10 patients. Reduction of vestibular function was measured by the head impulse test and the caloric test. Reduction of vestibular function was found in all gentamicin patient groups. After gentamicin vestibular ablation, patients underwent home vestibular exercising for two months. The control group consisted of 10 patients who underwent only home vestibular training two months preoperatively. Postoperative rate of recovery and vertigo in both groups were evaluated with the Glasgow Benefit Inventory (GBI), the Glasgow Health Status Inventory (GHSI) and the Dizziness Handicap Inventory questionnaires, as well as survey of visual symptoms by specific questionnaire developed by us.

Study Type

Interventional

Enrollment (Actual)

20

Phase

  • Not Applicable

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • clinical diagnosis of vestibular schwannoma
  • hearing loss on affected side
  • preserved vestibular reactivity of labyrinths on the affected side

Exclusion Criteria:

  • allergy to gentamicin
  • vestibular areflexia on the affected side

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Supportive Care
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: gentamicin
intratympanic application of gentamicin 0.5 ml
Drug: gentamicin
intratympanic application of gentamicin 2m/80mg - 3x application -0,5 ml
Other Names:
  • gentamycin

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
The GBI questionnaire
Time Frame: 2-3 years
The GBI questionnaire consists of 18 questions. The response to each question is based on a five-point Likert scale, ranging from a large deterioration to a large improvement in health status. The GBI questionnaire is scored into a total score, and also three subscales: a general subscale (12 questions), a social support subscale (three questions), and a physical health subscale (three questions). Score ranges were calculated and varied from -100 to +100. Score all questions so that a score of 1 is given to the answer with the worst change in health status and 5 to the answer with the best change in health status.
2-3 years
The GHSI questionnaire
Time Frame: 2-3 years
The GHSI questionnaire contains of 18 questions; again, the response to each question is based on a five-point Likert scale ranging from high to low health status. It is also scored into a total score and three subscales: general, social, and physical health subscales. All these scores range from 0 to +100. Score all questions so that a score of 1 is given to the answer with the worst change in health status and 5 to the answer with the best change in health status.
2-3 years
The DHI questionnaire
Time Frame: 2-3 years
The DHI contains 25 items and the range score is from 0 to +100, with a higher score indicating a more severe handicap.
2-3 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Hospital, Motol

Investigators

  • Principal Investigator: Zdeněk Čada, Ph.D., Department of Otorhinolaryngology and Head and Neck Surgery, 1st Faculty of Medicine Charles University in Prague and Motol University Hospital, Postgraduate Medical School

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

January 1, 2014

Primary Completion (Actual)

December 1, 2015

Study Completion (Actual)

December 1, 2015

Study Registration Dates

First Submitted

November 1, 2016

First Submitted That Met QC Criteria

November 14, 2016

First Posted (Estimate)

November 15, 2016

Study Record Updates

Last Update Posted (Estimate)

November 15, 2016

Last Update Submitted That Met QC Criteria

November 14, 2016

Last Verified

November 1, 2016

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 13476 FN Motol

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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