Caloric Test: Understanding Vestibular Testing for Dizziness

If you've ever experienced dizziness, you might have undergone vestibular testing, with one of the most common methods being the caloric test. This time-tested procedure, considered the gold standard in vestibular testing for over a century, plays a crucial role in diagnosing balance and inner ear issues.

The test involves irrigating the ears with air of varying temperatures, causing a convection current within the fluid-filled inner ears. This creates a sensation of movement, triggering a reflex called nystagmus, which is recorded through specialized goggles.

Dr. Jamie Bogle, Division of Audiology Chair at Mayo Clinic, demonstrates an actual test, where eye movements are monitored as warm air is introduced into the left ear. Dr. Bogle explains the expected sensations – from mild dizziness to feelings of rocking or spinning – all of which are completely normal during the test. As the procedure continues, the video emphasizes the importance of this test in evaluating the functionality of the inner ear and overall vestibular system.

Whether you're curious about medical procedures or seeking insights into diagnosing balance-related concerns, this video provides a comprehensive overview of the caloric test and its significance in vestibular assessment.

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00:00 Introduction to vestibular testing for dizziness.
00:34 Introduction to the caloric test and its significance.
01:08 Explanation of the caloric test mechanism and sensations.
01:39 Practical demonstration on Sarah's left ear with warm air.
02:18 Interpreting dizziness response, using DOT to stabilize.
02:51 Waiting and transitioning for testing the other ear.
03:33 Creating asymmetry, importance of the caloric test in vestibular assessment.