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Related Concept Videos

The Vestibular System01:29

The Vestibular System

45.0K
The vestibular system is a set of inner ear structures that provide a sense of balance and spatial orientation. This system is comprised of structures within the labyrinth of the inner ear, including the cochlea and two otolith organs—the utricle and saccule. The labyrinth also contains three semicircular canals—superior, posterior, and horizontal—that are oriented on different planes.
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Assessing Body Temperature - Tympanic membrane01:14

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Assessing tympanic membrane temperature involves using a tympanic membrane thermometer (TMT). Here is a step-by-step guide:
Step 1: Begin by practicing good hand hygiene to prevent the transmission of microorganisms.
Step 2: Turn on the thermometer and wait until the ready sign appears on the screen to ensure accurate measurement.
Step 3: Slide the probe cover in place to prevent cross-contamination.
Step 4: Instruct the patient to tilt their head to the side for comfort and check for cerumen...
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Assessing Body Temperature - Temporal Artery01:19

Assessing Body Temperature - Temporal Artery

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Here is a stepwise guide to assessing the body temperature at the temporal artery using a temporal artery thermometer
Step 1: Perform hand hygiene and don a fresh pair of gloves to prevent cross-infection and ensure patient safety.
Step 2: Explain the procedure to the patient to establish trust. Clear communication establishes trust with the patient, ensures they understand what to expect, promotes cooperation, and enhances comfort during the procedure.  
Step 3: Assess the patient's...
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Related Experiment Video

Updated: Mar 24, 2026

Testing of all Six Semicircular Canals with Video Head Impulse Test Systems
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Testing of all Six Semicircular Canals with Video Head Impulse Test Systems

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Monothermal Caloric Screening Test Accuracy: A Systematic Review.

Meredith E Adams1, Steven A Telian2, Robert L Kane3

  • 1Department of Otolaryngology-Head and Neck Surgery, University of Minnesota, Minneapolis, Minnesota, USA meadams@umn.edu.

Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery
|March 3, 2016
PubMed
Summary

The monothermal caloric screening test (MCST) shows variable accuracy for diagnosing unilateral vestibular dysfunction, particularly near normal function. Further research with standardized parameters and subgroup analysis is needed for reliable clinical application.

Keywords:
bithermalcaloric testelectronystagmographymeta-analysismonothermalscreeningsystematic reviewvestibular testvideonystagmography

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Area of Science:

  • Vestibular system diagnostics
  • Otolaryngology
  • Neuroscience

Background:

  • Monothermal caloric screening test (MCST) is used to minimize patient discomfort, time, and costs in vestibular laboratories.
  • Symmetric responses during MCST may lead to discontinuation of further testing.

Purpose of the Study:

  • To systematically review and determine the diagnostic accuracy of the MCST for unilateral vestibular dysfunction.
  • To compare the MCST's accuracy against bithermal caloric testing (BCT).

Main Methods:

  • Systematic review of 15 studies (n=5572) involving concurrent MCST and BCT.
  • Meta-analysis using hierarchical bivariate and univariate random-effects models.
  • Assessment of correlation, sensitivity, and specificity of MCST measures.

Main Results:

  • Strong correlation between MCST and BCT asymmetries, but no correlation in mild unilateral weakness subgroups.
  • MCST sensitivity ranged from 0.54-1.00; specificity ranged from 0.25-0.96.
  • Significant heterogeneity (I² > 60%) observed in most performance estimates across studies.

Conclusions:

  • MCST accuracy is limited, especially at the threshold between normal and abnormal vestibular function.
  • Clinical practice guidance requires further research focusing on specific patient subgroups and standardized testing protocols.