06/12/2026
Have you ever seen a rebreathing exam performed? Here is a great picture of Dr. Sarah Humprheys and Assistant Haley, taken during a rebreathing exam!
The rebreathing exam is performed to assess the horse’s lung function more thoroughly. By increasing the carbon dioxide levels the horse inhales, it encourages deeper breaths, which can reveal abnormal lung sounds such as wheezes, crackles, or other signs of airway obstruction that may not be detectable during normal breathing.
To achieve this, we place a plastic bag over the horse's nose for a few breaths while the veterinarian listens to their lungs. If the horse does in fact have something like asthma or allergies, they typically will cough or wheeze once the bag is removed. This is all great information and helps us paint a better picture of what's going on.
We also see an increase in the necessity for this exam during times of high allergens and asthmatic episodes, like spring and summer.
If you are needing to schedule a consultation for your horse, please call our office at 541-207-8308