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Pneumonia (Aspiration) in Dogs

Pneumonia from Inhalation of Foreign Matter in Dogs

 

Aspiration (or inhalation) pneumonia is a condition in which a dog's lungs become inflamed due to the inhalation of foreign matter, from vomiting, or from the regurgitation of gastric acid contents. Aspiration pneumonia can also be a direct result of a neuromuscular disorder, which would cause difficulty with swallowing, as well as problems associated with the esophagus, with possible paralysis of the esophagus.

 

Other causes for a dysfunction of the lungs may be an obstructed airway, or inhalation of gastric acids, which can cause extensive damage to the internal tissues of the lungs. Bacteria present in the inhaled foreign matter may also bring about infection.

 

Aspiration pneumonia is more prevalent in dogs than cats. If you would like to learn how this disease affects cats, please visit this page in the PetMD health library.

 

Symptoms and Types

 

Symptoms of aspiration pneumonia include breathing difficulties, swallowing difficulties, coughing, fever, discharge from the nasal passages, rapid breathing, increased heart rate, a bluish tinge to the skin (cyanosis), and a possible intolerance to exercise due to weakness. An altered mood, vomiting, loss of appetite, and regurgitation may also be present, depending on the underlying reasons for this condition. 

 

Causes

 

Common causes associated with aspiration pneumonia include abnormalities associated with the pharynx and neuromuscular disorders, which affect both the nerves and muscles.

 

An enlargement of the lower aspect of the dog's esophagus (due to regurgitation of gastric acid), or an incorrectly placed feeding tube can also lead to aspiration pneumonia.

 

Diagnosis

 

Your veterinarian will conduct a thorough physical examination using visual and audio diagnostic tools in order to gain a full perspective of the condition of the dog's lungs. Further testing, such as abdominal palpation, chest X-rays, a complete blood profile, including a chemical blood profile, and a complete blood count, may also be called for.

 

Blood tests will indicate the presence of infection, and chest X-rays will show if aspiration pneumonia is present. Fluid may be taken from the lungs for the purpose of defining whether there are bacteria present, and if so, will help determine which antibiotic will best serve in healing your dog.

 

If your pet is suffering from respiratory distress, your veterinarian may suggest a blood gas analysis, which is a test that measures the levels of oxygen and carbon dioxide concentrations in the blood.

 

Your veterinarian may also order a swallowing study for the purpose of concluding whether or not there is a dysfunction of the esophagus. An internal flourescent video X-ray, called a fluoroscopy, may be considered as well, to further assess the muscles of the esophagus, and their ability to move food down to the stomach.

 

 

 

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