Prevalence of Positional Nystagmus in a Population of Healthy Adults

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT05554770

Enrollment

Registered

2022-09-26

Start date

2022-10-06

Completion date

2023-01-01

Last updated

2023-08-08

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

Conditions

Healthy Volunteers, Positional Nystagmus

Brief summary

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

Detailed description

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.

Interventions

DIAGNOSTIC_TESTExaminations in a TRV chair

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

Study design

Observational model

OTHER

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Yes

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

Design outcomes

Primary

Measure	Time frame	Description
Prevalence of positional nystagmus	2 years	Number of subjects presenting with positional nystagmus during specific changes of head positions.

Secondary

Measure	Time frame	Description
Characteristics of positional nystagmus	2 years	Description the characteristics (latency, velocity, duration, direction) of positional nystagmus in healthy subjects.

Other

Measure	Time frame	Description
Specify current diagnostic criteria for Benign Paroxysmal Positional Vertigo	2 years	Expansion and clarification of current diagnostic criteria for BPPV

Countries

Denmark

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026