Norton Alannah M, Rosanowski Sarah M, O'Brien Tom
Stutsel Veterinary Services, Bathurst, NSW, Australia.
Consultant, Palmerston North, New Zealand.
Front Vet Sci. 2024 Nov 19;11:1479144. doi: 10.3389/fvets.2024.1479144. eCollection 2024.
Epiglottic entrapment (EE) is a common cause of poor performance in racing standardbreds (STBs) and thoroughbreds (TBs). There is limited information published on the condition in STB racehorses and limited information on factors associated with return to racing available for either breed.
This study investigated and compared the pre surgical findings, post-surgical complications and racing performance in STBs and TBs undergoing surgery for correction of EE. Associations between signalment and pre-surgical findings, and the presence of complications and racing post-surgery were compared using logistic regression analyses. Racing performance following surgery was compared to maternal siblings using conditional logistic regression.
There were 82 cases where epiglottic entrapment surgery was performed at least once: 33 STB cases and 49 TB cases. In total, 74% of cases raced following surgery. Cases with severe inflammation post-surgery ( < 0.001), airway complications ( < 0.001) or an epiglottic re-entrapment ( < 0.01) were at a lower odds of racing post-surgery. TB cases were 5.5 times (95% Confidence interval 1.61 to 18.73) more likely to race than their maternal siblings ( < 0.01). TB cases took 79% longer to return to racing compared to STB cases ( < 0.001). Horses that had raced prior to surgery were 4.1 times more likely to race after surgery than those that had not (95% CI 1.01-16.67).
Horses with post operative complications were at a lower odds of racing post surgery. In the current study, TBs with EE are more likely to race compared to their maternal half siblings however take longer to return to racing compared to STBs.
会厌嵌顿（EE）是标准赛马（STB）和纯种马（TB）比赛成绩不佳的常见原因。关于STB赛马这种情况的公开信息有限，而且这两个品种中与恢复比赛相关的因素的信息也有限。
本研究调查并比较了接受手术矫正EE的STB和TB的术前检查结果、术后并发症和比赛表现。使用逻辑回归分析比较了体征与术前检查结果之间以及并发症的存在与术后比赛之间的关联。使用条件逻辑回归将术后比赛表现与其母系半同胞进行比较。
共有82例至少接受过一次会厌嵌顿手术：33例STB病例和49例TB病例。总共有74%的病例术后参加了比赛。术后有严重炎症（<0.001）、气道并发症（<0.001）或会厌再次嵌顿（<0.01）的病例术后参赛的几率较低。TB病例参赛的可能性是其母系半同胞的5.5倍（95%置信区间1.61至18.73）（<0.01）。与STB病例相比，TB病例恢复比赛的时间长79%（<0.001）。术前参加过比赛的马术后参赛的可能性是未参赛马的4.1倍（95%CI 1.01 - 16.67）。
术后有并发症的马术后参赛的几率较低。在本研究中，患有EE的TB与其母系半同胞相比更有可能参赛，但与STB相比恢复比赛的时间更长。
