Megaesophagus

Body function:

Metabolic & Digestive

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Congenital megaesophagus is a genetic disorder affecting several different dog breeds. It is believed to be caused by incomplete nerve development in the esophagus and decreases the mobility of the esophageal muscles. As a result, food and liquid accumulate in the esophagus and cause it to stretch, resulting in a larger than-normal esophagus.

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List of affected breeds:

Genetic research has linked this gene and condition in the following breeds:

German Shepherd

A brown and white dog is running through a grassy field. The dog's tail is wagging, and it looks happy and energetic. There are some rocks and trees in the background.

What does this mean for a dog with this trait?

Megaesophagus cannot be cured. Dogs with the condition may be helped by raising food bowls above head height, allowing gravity to naturally pull food down the esophagus. Smaller and more frequent meals are recommended. In some cases, medications can help treat esophageal irritation and reduce regurgitation.

Symptoms

Signs of megaesophagus appear when dogs start to consume solid food. Dogs regurgitate, causing liquid and food to suddenly come from their mouths without gagging or retching. Dogs with megaesophagus may also salivate excessively and are at a greater risk of developing aspiration pneumonia.

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