There was a significant difference in whether a URT abnormality was observed between the groups (P<0.001); URT abnormalities were most likely observed in horses that made abnormal noise during training and least likely in those referred for poor performance without abnormal noise. Horses were significantly less likely to have a URT abnormality observed during the test if the presenting complaint was not reproduced (P<0.001). There were no significant differences between the groups in the proportion of horses with DDSP (DDSP) (P = 0.31), PI (P = 0.30), ADAF (P = 0.52) or pharyngeal wall collapse (PWC) (P = 0.81) (Fig?2). There was a significant difference for arytenoid cartilage collapse <a href="http://www.selleckchem.com/products/OSI-906.html
">Selleckchem Linsitinib and vocal fold collapse (ACC+VCC) (P = 0.021), which was less common in horses referred for poor performance without abnormal noise. The aim of this study was to report the exercise test parameters used during overground endoscopy in UK Thoroughbred racehorses and to identify SB-203580
whether these affected the ability to diagnose URT abnormalities. The results of this study show there was marked variation in the exercise test parameters that were used during overground endoscopy. The exercise test was most frequently performed at the trainers' premises, therefore tests were highly dependent on the facilities available at that training yard and are subsequently very difficult to standardise. The advantages of undertaking exercise tests on high-speed treadmills are that the speeds, distances and inclines can be standardised between horses and, as they can be decided upon prior to the test, are under exact control of the veterinary surgeon. Whereas during overground endoscopy the exercise tests were more dependent upon the trainer, jockey and facilities and the veterinary surgeon was less able to specify exact parameters of the exercise test. For many horses a normal ��gallop�� training session was performed and this type Akt inhibitor
of field exercise test was used in Thoroughbreds in 2 recent publications (Gramkow and Evans 2006; Vermeulen and Evans 2006). However, it has previously been shown that gallop speeds vary considerably between trainers (Dyson et?al. 2003). Peak speeds during testing were similar to the average speeds obtained from winning horses during racing. However, these were maintained only briefly during the exercise test and hence average speeds during testing were significantly lower. For flat horses, the distances performed during training may be similar to race distances whereas for NH horses training distances are markedly shorter than the distances encountered during racing. Interestingly, this probably explains why a significantly larger proportion of flat horses were referred for abnormal noise in training compared with NH horses. The differences in the training and racing distance explain why NH horses were often referred for abnormal noise in racing that was not present during training.