The Accuracy of Manual BPPV Diagnostics When Using VNG Goggles.

Aalborg University Hospital215 enrolled

Overview

The aim is to investigate the accuracy of manual diagnostics of benign paroxysmal positional vertigo (BPPV) by comparing it to BPPV diagnostics in mechanical rotational chair (TRV chair). VNG (videonystagmography) goggles will be used in both scenarios. Furthermore, the investigators will examine the importance of angulation and velocity in relation to the diagnostic outcome.

Open-label, randomized controlled trial with cross over comparing manual bedside BPPV diagnostics with diagnostics in a mechanical rotational chair (TRV chair) when using VNG goggles in both scenarios. Patients with a history of positional vertigo will be considered for enrollment and randomized to which diagnostic modality they begin with. Each subject will wait for minimum 30 minutes between the two diagnostics.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

DIAGNOSTIC

Masking

NONE

Enrollment

215

Conditions

Benign Paroxysmal Positional Vertigo BPPV Vertigo Vestibular Disorder

Interventions

BPPV diagnosticDIAGNOSTIC_TEST

Supine Roll Test and Dix-Hallpike Test

TRV chairDEVICE

Mechanical rotational chair

VNG gogglesDEVICE

Goggles for video nystagmography

IMU sensorDEVICE

A sensor that measures triaxial acceleration and triaxial angular velocity.

Manual BPPV diagnosticsPROCEDURE

Bedside BPPV diagnostics

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Age above 18 years * Classic BPPV-patient history (short lasting (\<1 minute) positional rotatory vertigo, no accompanying tinnitus or hearing loss, and no focal neurological findings. * Understand written and spoken Danish Exclusion Criteria: * Pregnancy * Weight ≥ 150 kg and or Height ≥ 2m * Neck and spine immobility to a degree where MD on examination bed is impossible * Insufficient cooperation during diagnostic testing * Sedative antihistamines taken within the past seven days * Comorbidities: Heart failure (EF \< 40), known cerebral aneurysm, cerebrovascular events (\<3 months) or dissection disease * Spontaneous or gaze evoked nystagmus

Outcomes

Primary Outcomes

Diagnostic Accuracy

Sensitivity, specificity, positive predictive value and negative predictive value of bedside examination (index-test). Gold standard is diagnostics in the TRV chair.

Time frame: 2 year

Secondary Outcomes

Head angulation during diagnostic bedside examination.

Angulation of the head during diagnostic bedside examination will be measured using an IMU sensor. Data will be presented as the difference in head angulation compared to the ideal angulation descriped for the diagnostic tests.

Time frame: 2 year

Angular velocity during diagnostic bedside examination

Angular velocity of the head movements during diagnostic bedside examination will be measured using an IMU sensor. Data will be presented as mean velocity and peak velocity.

Time frame: 2 year

The Accuracy of Manual BPPV Diagnostics When Using VNG Goggles.

Overview

Conditions

Interventions

Eligibility

Locations (1)

Outcomes

Primary Outcomes

Secondary Outcomes