None listed
Conditions
Brief summary
The primary purpose of the study is to observe the compensatory strategies that the brain uses to recover from acute labyrinthitis. It is proposed that in patients with a partial labyrinthitis there may be a complete and early recovery of their eye movements generated by the inner ear. That is, the normal eye velocity generated by balance receptors in the inner ear should match the head velocity signal in a short period of time of seven days. Secondly it is proposed that the compensatory brain mechanisms used following acute labyrinthitis with rapid catch up eye movements (covert saccades) will occur within the first 24-48 hours of presentation.
Interventions
Measurement of the hypoactive vestibular ocular reflex (VOR) by videooculography
Patients with clinical features of acute labyrinthitis will be seen in casualty within 24hrs of their symptom onset of acute vertigo. The head impulse test measures the eye movement response of a hypoactive VOR to a high acceleration head impulse when the examiner moves the subjects head with brief random head thrusts in the angular plane. It is hoped that approximately 12 random head impulse tests will be able t
Measurement of the hypoactive vestibular ocular reflex (VOR) by videooculography Patients with clinical features of acute labyrinthitis will be seen in casualty within 24hrs of their symptom onset of acute vertigo. The head impulse test measures the eye movement response of a hypoactive VOR to a high acceleration head impulse when the examiner moves the subjects head with brief random head thrusts in the angular plane. It is hoped that approximately 12 random head impulse tests will be able to be assessed to the ipsilateral and contralateral side, depending on patient compliance and acceptability. The abnormal VOR will be monitored serially with videooculography with repeat testing in a 20 minute session to assess recovery on six occasions over a period of up to 3 months.
Sponsors
Capital and Coast health
Eligibility
Sex/Gender
All
Age
10 Years to No maximum
Healthy volunteers
No
Inclusion criteria
Patients with the clinical picture of acute labyrinthitis
Exclusion criteria
Patients who are too ill to be examined by video oculography
Outcome results
None listed