The Dragonfly Story

Role & Function of the Eustachian Tube

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The eustachian tube allows ventilation of fresh air into the middle ear and drainage of fluids from the middle ear. But what happens if we have a cold or flu, have large adenoids or tonsils, or are prone to allergies such as hay fever?  In any of these situations, the eustachian tube may become inflamed, swollen or blocked. This will reduce or stop the ventilation and drainage of the middle ear. When this happens it could lead to one of the following three types of Otitis Media:

  1. Acute Otitis,
  2. Chronic Otitis (sometime referred to as glue ear)
  3. Or chronic superlative Otitis (better known as runny ear)