Abstract
Reasons for performing study: To date there is no information
on the comparison of the more recently documented
technique of performing endoscopy during ridden exercise
in the field, with the more traditional method of endoscopy
during high-speed treadmill exercise.
Objectives: To compare the results of upper respiratory
tract endoscopy in UK Thoroughbred racehorses performed
during ridden exercise in the field with those obtained during
exercise on the treadmill.
Methods: A direct comparison was undertaken in 4 horses
whereby both procedures were performed in the same
horse within 10 days of each other. An indirect comparison
was also undertaken whereby the results of overground
endoscopy performed in 50 racehorses was compared to the
results obtained during treadmill endoscopy in a further
50 racehorses. Horses were matched for age, gender, use
(National Hunt vs. Flat) and presenting complaint (abnormal
respiratory noise vs. poor performance).
Results: Dorsal displacement of the soft palate was diagnosed
less frequently during overground endoscopy than during
treadmill endoscopy. There was no significant difference in
the diagnosis of dynamic laryngeal collapse between the 2
techniques. The treadmill exercise test was performed over
longer distances at higher inclines, albeit at lower speeds
than the overground test. In contrast to the treadmill
test, the overground test was frequently performed in
intervals.
Conclusions: The results of both the direct and indirect
comparisons suggest that dorsal displacement of the soft
palate is diagnosed less often during overground endoscopy
than during treadmill endoscopy. Strenuous exercise tests
may be more easily performed on a treadmill than by
performing multiple exercise intervals in the field.
Potential relevance: Care should be taken in interpreting
negative findings during both procedures, but particularly
during overground endoscopy if racing conditions have not
been appropriately replicated.
Translated title of the contribution | Comparisons of overground endoscopy and treadmill endoscopy in U.K. Thoroughbred racehorses |
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Original language | English |
Pages (from-to) | 186 - 191 |
Number of pages | 5 |
Journal | Equine Veterinary Journal |
Volume | 42 |
DOIs | |
Publication status | Published - 2010 |