Dog Owner's Home Veterinary Handbook.pdf - Mr. Walnuts

Bronchodilator drugs such as aminophylline, theophylline, or albuterol are
beneficial for many small dogs. Mild low-dose sedatives during stressful periods
also are helpful. Cough suppressants and corticosteroids may be prescribed
when the coughing is particularly severe. Respiratory infections require
prompt treatment with antibiotics.
Surgery can be considered in severe cases. It involves suturing plastic rings
around the trachea, which then keep the airway open. Complications are
possible.
CHRONIC BRONCHITIS
THE RESPIRATORY SYSTEM • 323
This chest X-ray shows an enlarged air column (dark shadow) in the neck, indicating
a normal-sized trachea, and a narrow air column in the chest, indicating a
collapsing trachea.
This disease affects middle-aged dogs of both sexes. It is characterized by an
acute inflammatory reaction of the interior of the smaller airways. Chronic
bronchitis should be considered whenever a cough persists for more than two
months.
In most cases the cause is unknown. Although some cases are preceded by
kennel cough, infectious agents usually do not play a role except as secondary
invaders. House dust, cigarette smoke, and other atmospheric irritants contribute
to bronchial inflammation.
The hallmark of chronic bronchitis is a harsh, dry cough that may or may not
be productive. Coughing is triggered by exercise and excitement. Episodes often
end with gagging, retching, and the expectoration of foamy saliva. This can be
mistaken for vomiting. The dog’s appetite and weight are well maintained.