Prevalence of Positional Nystagmus in a Population of Healthy Adults

Aalborg University Hospital78 enrolled

Overview

To investigate the prevalence of positional nystagmus in a population of healthy Danish adults.

Open-label, cross-sectional prospective study examining the prevalence of positional nystagmus in healthy adults (adult with no previous or current inner ear disease) using a mechanical repositioning chair (TRV-chair, Interacoustics, Middelfart, Denmark). Patients will undergo traditional testing related to positional nystagmus by means of both the Dix-Hallpike test and Supine Roll Test (SRT) bilaterally. Latency, duration, and slow phase velocities will be registered and examiner as well as order of the positional tests performed with the TRV chair will be block randomized.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Positional Nystagmus Healthy Volunteers

Interventions

Examinations in a TRV chairDIAGNOSTIC_TEST

Positional tests (Dix-Hallpike and SRT) traditionally used to diagnose BPPV uwith a TRV chair.

Eligibility

Sex: ALLMin age: 18 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * \+ 18 years Exclusion Criteria: * Previous or current BPPV, inner ear disease, other ear conditions or neurological conditions * Reduced eye mobility * Alcohol consumption within 48 hours * Weight \> 150 kg. * Known cerebral aneurysm * Cerebral haemorrhage within 1 month * Trouble cooperating during examinations * DHI-score \> 14

Locations (1)

Department of Otolaryngology, Head- and Neck Surgery and Audiology

Aalborg, North Denmark, Denmark

Outcomes

Primary Outcomes

Prevalence of positional nystagmus

Number of subjects presenting with positional nystagmus during specific changes of head positions.

Time frame: 2 years

Secondary Outcomes

Characteristics of positional nystagmus

Description the characteristics (latency, velocity, duration, direction) of positional nystagmus in healthy subjects.

Time frame: 2 years

Data from ClinicalTrials.gov

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