AudiologyOnline Phone: 800-753-2160


Inventis - June 2021

Why Do Rotary Tests Still Have a Significance in Vestibular Diagnostics?

Enrico Armato, MD

December 13, 2021

Share:

Question

Why do rotary tests still have a significance in vestibular diagnostics?

Answer

Rotary tests are a particularly efficient method of investigating vestibular function because:

  1. They constitute a physiological stimulus (acts in pull-push on a pair of canals);
  2. Provide a stimulus closer to natural stimulation frequencies than thermal tests;
  3. Are independent of the anatomical structure of the temporal bone of each individual patient;
  4. Calculate a fundamental parameter: the gain, or the ratio between the eye velocity (output) and the chair/head velocity (input);
  5. They are the ideal tests for assessing the visuo-vestibular interaction;
  6. Allow to evaluate the modulating action of the cerebellum through the step test (abrupt stop) which measures the decay and the maximum velocity of the post-rotatory nystagmus;
  7. Monitor the evolution of compensation for unilateral peripheral vestibular deficits;
  8. In the case of thermal areflexia (very low frequencies) and / or a low gain at V-HIT (high frequencies), they evaluate the functional efficiency of the vestibule at low and medium frequencies.

Please watch these courses for more information, Vestibular and Balance Assessment in Children with Sensorineural Hearing Loss: An Overview and Recent Advances in the Diagnosis and Treatment of Meniere's Disease.

To learn more about Inventis please visit their Corporate Partner page on AudiologyOnline or inventis.it


enrico armato

Enrico Armato, MD

ENT, AULSS 3 Regione Veneto, (Venice, Italy)

Enrico received his specialization in Medicine and Surgery from Padua University. He subsequently obtained an ENT specialization and another specialization in Audiology. He has over 25 years of experience working as an ENT specialist focused on surgery, especially in the neck area. His real passion is Otoneurology. For many years he has been interested in the functional evaluation of vertiginous patients. He has presented at various webinar and meetings both nationally and internationally.

He is the author of the book The Video Head Impulse Test – Theoretical and practical aspects and co-author of several journal articles and book chapters in national and international literature. He is engaged in performing diagnostic vestibular testing with all age ranges in various practice environments. 


Related Courses

REM Workshop Part 1: Scientific Principles Underlying the Common Verification Techniques
Presented by Jay Jindal, AuD, Nicole DaRocha
Recorded Webinar
INVENTIS • Audiology Equipment

Presenters

Jay Jindal, AuDNicole DaRocha
Course: #37137Level: Intermediate2.5 Hours
  'Both speakers were excellent!'   Read Reviews
A complete, practical course in the verification of hearing device fittings. Our experts will cover all clinically important aspects of real-ear measurements, which is an excellent initial reference point for the hearing care professional and his clients to start the journey of better hearing. In this 1st session, the speakers will talk about the scientific principles underlying the common verification techniques.

View this Course for FREE.
Need CEUs? Become a AudiologyOnline member to get unlimited CEUs.

Only $99/yr

Learn More

REM Workshop Part 2: Setting Up and Verifying Various Fitting Parameters via Real Ear Measurements
Presented by Jay Jindal, AuD, Nicole DaRocha
Recorded Webinar
INVENTIS • Audiology Equipment

Presenters

Jay Jindal, AuDNicole DaRocha
Course: #37143Level: Intermediate2.5 Hours
  'Jay and Nicole are so knowlegable'   Read Reviews
A complete, practical course in the verification of hearing device fittings. Our experts will cover all clinically important aspects of real-ear measurements, which is an excellent initial reference point for the hearing care professional and his clients to start the journey of better hearing. This 2nd session covers the setting and verification of the various fitting parameters via real-ear measurements.

View this Course for FREE.
Need CEUs? Become a AudiologyOnline member to get unlimited CEUs.

Only $99/yr

Learn More

Vestibular and Balance Assessment in Children with Sensorineural Hearing Loss: An Overview
Presented by Nor Haniza Abdul Wahat, PhD
Recorded Webinar
INVENTIS • Audiology Equipment

Presenter

Nor Haniza Abdul Wahat, PhD
Course: #36958Level: Intermediate1 Hour
  'Organized and very knowledgeable'   Read Reviews
Over the past five years, we have seen a growing interest in studying vestibular disorders in children. The most commonly noteworthy are vestibular disorders in congenital sensorineural hearing loss (SNHL) and cochlear implants. Identifying and diagnosing vestibular and balance dysfunction in children is essential for their overall well-being. However, the diagnosis process is very demanding.This talk will provide an overview of vestibular and balance assessments in children with SNHL.

View this Course for FREE.
Need CEUs? Become a AudiologyOnline member to get unlimited CEUs.

Only $99/yr

Learn More

Real-Time Diagnostic Tele-Audiology: The Future is Now!
Presented by Elizabeth Thompson, AuD
Recorded Webinar
INVENTIS • Audiology Equipment

Presenter

Elizabeth Thompson, AuD
Course: #37019Level: Intermediate1 Hour
  'The presentation displayed a tangible way to provide satellite services to distant patients'   Read Reviews
The need for real-time diagnostic tele-audiology solutions continues to grow as the demand for audiology services expands. This course discusses the benefits of tele-audiology, the opportunities for use and how Satellite by Inventis is uniquely positioned to deliver by providing tools that allow providers to interact and perform complete hearing assessments remotely in real-time.

View this Course for FREE.
Need CEUs? Become a AudiologyOnline member to get unlimited CEUs.

Only $99/yr

Learn More

Superior Canal Dehiscence Syndrome: Clinical-Instrumental Aspects and Atypical Scenarios
Presented by Andrea Castellucci, MD
Recorded Webinar
INVENTIS • Audiology Equipment

Presenter

Andrea Castellucci, MD
Course: #37278Level: Advanced1.5 Hour
  'Best vestibular course and best explanations for the disorders I have ever experienced'   Read Reviews
Besides typical symptoms and signs (including pulsatile tinnitus, hyperacusis, pressure/sound-induced torsional nystagmus, conductive hearing loss and lowered thresholds of air-conducted VEMPs) an analysis of the relevant literature reveals a certain clinical polymorphism induced by superior canal dehiscence (SCD). In addition to asymptomatic persons or subjects with SCD presenting exclusively with cochlear symptoms (only partly explained by the so-called “near-dehiscence syndrome”), SCD cases mainly presenting with atypical/refractory/recurrent positional vertigo and/or Meniere-like vertigo spells have been recently described. Moreover, if surgical occlusion of the superior canal (SC) results in symptoms control inducing a selective SC hypofunction, clinicians my sometimes accidentally detect a reduced SC VOR gain in asymptomatic patients with wide-sized dehiscence. These findings led authors to propose the occurrence either of a natural SC plugging (complete or incomplete) by middle fossa dura prolapsing into the canal lumen or a dispersion of mechanical energy through the dehiscence. Typical and atypical scenarios is presented. A subsample of patients from the personal series with a complete otoneurologic assessment (audiometry, VOG eye recording, air/bone-conducted cervical/ocular VEMPs, video head impulse test) is selected to explain these emerging theories on possible pathomechanisms.

View this Course for FREE.
Need CEUs? Become a AudiologyOnline member to get unlimited CEUs.

Only $99/yr

Learn More