Overview of Canine Pneumothorax
Pneumothorax is the abnormal presence of air within the chest cavity, which restricts the lungs from inflating normally during inhalation. Air is normally confined to spaces within the lungs. This can be a life-threatening condition in dogs.
Pneumothorax can be sub-divided into the following categories:
General Causes of Pneumothorax in Dogs
Pneumothorax can be the result of any of the following:
Dogs with pneumothorax exhibit difficulty breathing and, in severe cases that are left untreated, pneumothorax can be fatal.
What to Watch For
Signs of pneumothorax in dogs may include:
Diagnosis of Pneumothorax in Dogs
Depending on how much difficulty breathing your dog is experiencing, your veterinarian may want to place him in an oxygen cage immediately before obtaining a history from you regarding his condition. Your veterinarian will perform a thorough physical examination with careful auscultation (listening with a stethoscope) of your dog’s chest to determine the cause of trouble breathing. Additionally, your veterinarian will likely recommend the following tests:
Treatment of Pneumothorax in Dogs
Treatment of a pneumothorax may need to be done as an emergency procedure and may include any of the following:
Home Care and Prevention
Pets that show signs of difficulty breathing should be taken to your veterinarian immediately. Restrict exercise initially following discharge from the hospital.
Keeping pets leashed or confined to the yard can reduce the risk of pneumothorax caused by traumatic injuries due to automobile accidents or attacks by other animals.
There is no way to prevent a spontaneous pneumothorax from occurring.
In-depth Information on Pneumothorax in Dogs
The chest cavity does not normally contain air, except for air within the lungs. Any air in the chest cavity is abnormal. A pneumothorax develops when air is allowed into the chest cavity through a breach in the chest wall due to injury (external leak), and/or air leaks into the chest cavity due to a leak in the lung tissue or airways (internal leak).
The presence of air within the chest cavity exerts pressure on the lungs so they cannot expand or inflate when the pet tries to take a breath. Large volumes of air cause the lungs to collapse completely. If the lungs do not inflate normally or are collapsed, the pet cannot obtain enough oxygen and develops signs of difficulty breathing such as rapid, shallow breaths, and cyanotic (blue) gums and tongue. The volume of air and the rate at which it accumulates within the chest varies with the degree of traumatic injury or underlying problem.
Pets with pneumothorax require hospitalization for an average of two to five days.