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The Zero to Finals Medical Revision Podcast

Labyrinthitis

The Zero to Finals Medical Revision Podcast

Thomas Watchman

Life Sciences, Education, Medical Finals, Medicine, Surgery, Health & Fitness, Paediatrics, Medical Student, Medical Education, Medical Exams, Medical School, Medical Revision, Science, Learn Medicine, Finals Revision, Obstetrics And Gynaecology

4.8678 Ratings

🗓️ 12 January 2022

⏱️ 4 minutes

🧾️ Download transcript

Summary

This episode covers labyrinthitis. Written notes can be found at https://zerotofinals.com/surgery/ent/labyrinthitis/ or in the ear, nose and throat section of the Zero to Finals surgery book. The audio in the episode was expertly edited by Harry Watchman.

Transcript

Click on a timestamp to play from that location

0:00.0

Hello and welcome to the Zero to Finals podcast.

0:08.5

My name is Tom and in this episode I'm going to be talking to you about labyrinthitis.

0:13.1

And you can find written notes on this topic at zero definals.com slash labyrinthitis

0:18.0

or in the ear, nose and throat section of the zero definals surgery book.

0:23.5

So let's get straight into it.

0:26.5

Labrynthitis refers to inflammation of the bony labyrinth of the inner ear, which includes the

0:32.7

semicircular canals vestibule, which is the middle section of the labyrinth, and the cochlear.

0:39.5

The inflammation is usually attributed to a viral upper respiratory tract infection.

0:46.0

Rarely labyrinthitis can be caused by a bacterial infection.

0:51.0

This may be an inflammatory response to a nearby infection

0:54.0

or the result of bacteria or bacterial toxins entering the labyrinth itself.

1:01.1

It's usually secondary to otitis media or meningitis.

1:05.8

Let's talk about the presentation.

1:08.6

Labyrinthitis presents with acute onset vertigo, similar to

1:13.3

vestibular neuronitis. Unlike vestibular neuronitis, labrynthitis can also be associated with hearing

1:20.9

loss and tinnitus. Patients may have symptoms associated with the causative virus, such as a cough, sore throat and block nose.

1:30.8

So how do you make the diagnosis? A clinical diagnosis is based on the history and examination findings.

1:38.6

Whenever a patient presents with vertigo, it's important to exclude a central cause of the vertigo, meaning vertigo caused by

1:46.2

a problem in the brain, such as a posterior circulation infarction, which is a type of stroke.

1:53.0

The head impulse test can be used to diagnose peripheral causes of vertigo, resulting from

1:58.9

problems with the vestibular system, for example,

2:01.6

vestibular neuronitis or labyrinthitis.

...

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