Laryngeal Paralysis
What is Laryngeal Paralysis?
The larynx, or "voice box” is located in the throat, where it acts to close the respiratory tract off while your dog eats and drinks so that food is not inhaled. In laryngeal paralysis certain muscles that normally work to open and close the larynx (for breathing as opposed to swallowing) fail to work properly, so that when the dog inhales the larynx doesn't open properly. The dog is unable to inhale fully, causing him to become anxious, in turn leading to rapid breathing and even more distress. The situation builds on itself, sometimes leading to a respiratory emergency and even death.
How does my dog get Laryngeal Paralysis?
The cause is unknown. However, the typical patient is an older dog of a large breed, particularly Labrador Retrievers. Many affected dogs also have hypothyroidism, but no cause and effect relationship has been shown. In Bouvier des Flandres, a hereditary form affecting young dogs is known.
How do I know if my dog has Laryngeal Paralysis?
Onset is usual gradual. Affected dogs may pant more than usual, tire easily, or breathe loudly. The sound of his bark may change. In advanced cases, he may gasp for breath and become distressed. A diagnosis requires that his larynx be examined while he is under light sedation so it can be visualized while he's breathing. In some cases, an endoscope can be threaded down the dog's nostril, which does away with the need for sedation---if the dog is cooperative. Your veterinarian may also take chest radiographs to make sure your dog doesn't have inhalation pneumonia, megaesophagus or tumors.
What can I do about Laryngeal Paralysis?
If your dog is gasping for breath, this is an emergency. The situation can build on itself until the larynx starts to swell and the dog cannot breathe at all. In addition, he starts to overheat and fluid accumulates in his lungs. Keep him calm and cool and take him to the veterinarian immediately. The veterinarian can cool and sedate him and pass a tube down his throat so he can breathe. She will give him drugs to counteract the swelling. If possible, she will stabilize him while you discuss the treatment options. For severe cases, surgery is the best option, but there are several surgery types to choose from. Your veterinarian may refer you to a veterinary surgeon who specializes in soft tissue surgeries.
Is there anything I can do to prevent my dog from getting Laryngeal Paralysis?
There is nothing you can do to prevent the condition.
Are there certain breeds that get Laryngeal Paralysismore often?
Large breeds, especially Labrador Retrievers, Siberian Huskies, and Dalmatians, are more likely to develop the condition.