Endoscopy
A small camera is passed through the nasal passages and into the pharynx and larynx to observe structures important for proper airway function. Additionally, the guttural pouches are able to be examined for signs of bacterial or fungal infection, inflammation. Sedation may be required for this outpatient procedure.
Treadmill Evaluation
Examination of the upper airway during exercise can be an important part of diagnosing performance limiting disorders. The LVMC has an equine treadmill available for dynamic upper airway evaluation. The endoscope (link to “endoscopy”) camera is placed in the nasal passages to view the response of the larynx during the extreme differences in airway pressure experienced during exercise. Horses require at least two days’ hospitalization to become accustomed to the treadmill prior to this examination.