Department of Clinical Veterinary Science, University of Bristol, Langford House, Langford, Bristol BS40 5DU, UK.
Equine Vet J. 2010 Apr;42(3):186-91. doi: 10.1111/j.2042-3306.2010.00033.x.
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.
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.
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).
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.
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.
Care should be taken in interpreting negative findings during both procedures, but particularly during overground endoscopy if racing conditions have not been appropriately replicated.
迄今为止，尚无关于在野外骑乘运动中进行内镜检查的最新记录技术与在高速跑步机运动中进行传统内镜检查的比较的信息。
比较英国纯血赛马在野外骑乘运动中进行的上呼吸道内镜检查结果与在跑步机上进行的运动结果。
对 4 匹马进行了直接比较，在 10 天内对同一匹马进行了两种程序。还进行了间接比较，即将在 50 匹赛马中进行的地面内镜检查结果与在另外 50 匹赛马中进行的跑步机内镜检查结果进行了比较。马匹根据年龄、性别、用途（国家狩猎与平地）和主要症状（呼吸异常与表现不佳）进行匹配。
与跑步机内镜检查相比，在地面内镜检查中诊断出的软腭后移位较少。两种技术之间的动态喉塌陷诊断没有显著差异。尽管速度较低，但跑步机运动测试的距离较长，坡度较高。与跑步机测试相比，地面测试经常以间隔进行。
直接和间接比较的结果均表明，在地面内镜检查中诊断出的软腭后移位较跑步机内镜检查少。与在野外进行多次运动间隔相比，在跑步机上进行剧烈运动测试可能更容易。
在两种程序中都应注意解释阴性发现，但如果没有适当复制比赛条件，则在地面内镜检查中应特别注意。
