Exercising upper respiratory videoendoscopic findings of 50 competition draught horses with abnormal respiratory noise and/or poor performance.
Authors: Hackett E S, Leise B S
Journal: Equine veterinary journal
Summary
# Editorial Summary: Exercising Upper Respiratory Videoendoscopy in Draught Horses Abnormal respiratory noise and poor performance in competition draught horses often warrant investigation of upper airway dysfunction, yet traditional resting endoscopy may fail to reveal dynamic obstructions that only manifest during work or with the specific equipment used in showing. Hackett and Leise examined 50 competition draught horses displaying respiratory noise and/or suboptimal performance using overground videoendoscopy whilst driven in harness with overcheck and load—replicating competitive conditions rather than relying on static examination. This dynamic assessment approach proved significantly more revealing than resting endoscopy would likely have been, allowing clinicians to observe how the airway actually behaves under the functional and mechanical stressors the horse encounters in the show ring. For practitioners supporting draught horses, this work underscores the diagnostic value of exercising endoscopy when resting findings are normal or inconclusive in symptomatic animals, and highlights how harness, overcheck positioning, and cart load directly influence dynamic airway collapse and obstruction that may be invisible at rest. Incorporating driven endoscopy into your diagnostic toolkit offers a more functionally relevant assessment and potentially more targeted treatment strategies for performance issues in working harness horses.
Read the full abstract on PubMed
Practical Takeaways
- •Consider exercising endoscopy under working conditions (harness, overcheck, load) rather than resting exams when evaluating draught horses with respiratory issues, as airway problems are most obvious during actual work
- •Overground endoscopy provides more realistic assessment of URT function in competition draught horses than stationary evaluations
- •Dynamic testing under harness and load may identify airway conditions affecting performance that resting endoscopy could miss
Key Findings
- •Overground endoscopy with harness, overcheck and cart-load better replicates show-ring conditions than resting endoscopy
- •Upper respiratory tract endoscopy findings in draught horses with respiratory noise and/or poor performance were documented during exercise conditions
- •Dynamic airway assessment during draught work may reveal clinically significant URT abnormalities not evident at rest