{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T16:31:32Z","timestamp":1789662692346,"version":"4.0.1"},"reference-count":29,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2013,3,21]],"date-time":"2013-03-21T00:00:00Z","timestamp":1363824000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["beva.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Equine Veterinary Journal"],"published-print":{"date-parts":[[2013,11]]},"abstract":"Summary<\/jats:title>\n \n Reasons for performing the study<\/jats:title>\n \n Endoscopic examination of\n T<\/jats:styled-content>\n horoughbred (\n TB<\/jats:styled-content>\n ) yearlings is performed routinely to determine the suitability of horses for racing and to ensure that the conditions of sale are satisfied. However, previous research has demonstrated that resting endoscopic examination can be inaccurate in the diagnosis of functional pathology of the upper portion of the respiratory tract (\n URT<\/jats:styled-content>\n ).\n <\/jats:p>\n <\/jats:sec>\n \n Objectives<\/jats:title>\n \n To investigate the feasibility of performing dynamic overground endoscopy in a group of\n TB<\/jats:styled-content>\n yearlings and to compare the results of resting and dynamic endoscopic examination of the\n URT<\/jats:styled-content>\n .\n <\/jats:p>\n <\/jats:sec>\n \n Study design<\/jats:title>\n Prospective cohort study.<\/jats:p>\n <\/jats:sec>\n \n Methods<\/jats:title>\n \n Resting (pre\u2010 and post exercise) and exercising endoscopy was performed on 57\n TB<\/jats:styled-content>\n yearlings at a single training yard. Observed abnormalities were recorded and graded. The results of resting and dynamic examination were compared.\n <\/jats:p>\n <\/jats:sec>\n \n Results<\/jats:title>\n \n Dynamic overground endoscopy was well tolerated and was performed with few complications. Laryngeal asymmetry (29 cases) was the most common abnormality identified at rest, while intermittent dorsal displacement of the soft palate (\n IDDSP<\/jats:styled-content>\n ; 19 cases) was the most common at exercise. Significant variation in laryngeal function and variation in the occurrence of\n IDDSP<\/jats:styled-content>\n was noted between examinations. Other potentially significant pathology that was not noted at rest but was present during exercise included collapse of the apex of the corniculate process, pharyngeal collapse and cricotracheal ligament collapse. The occurrence of\n IDDSP<\/jats:styled-content>\n at exercise was significantly associated with epiglottic structure\n grade<\/jats:italic>\n >\n 2<\/jats:italic>\n and a recent history of respiratory tract infection.\n <\/jats:p>\n <\/jats:sec>\n \n Conclusions<\/jats:title>\n \n Dynamic overground endoscopy is safe and potentially useful when assessing\n URT<\/jats:styled-content>\n function in\n TB<\/jats:styled-content>\n yearlings. Significant variations in the results of endoscopy at rest and during exercise were identified, which indicate that resting endoscopy may not be sufficient to predict the occurrence of pathology during exercise.\n <\/jats:p>\n <\/jats:sec>\n \n Potential relevance<\/jats:title>\n \n Dynamic overground endoscopic examination could be considered a suitable means of assessing\n URT<\/jats:styled-content>\n function in\n TB<\/jats:styled-content>\n yearlings and may provide additional pertinent information to that obtained during standard resting examination.\n <\/jats:p>\n <\/jats:sec>","DOI":"10.1111\/evj.12061","type":"journal-article","created":{"date-parts":[[2013,2,6]],"date-time":"2013-02-06T20:48:38Z","timestamp":1360183718000},"page":"700-704","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":40,"title":["Comparison of dynamic and resting endoscopy of the upper portion of the respiratory tract in 57\n T<\/scp>\n horoughbred yearlings"],"prefix":"10.1111","volume":"45","author":[{"given":"P. G.","family":"Kelly","sequence":"first","affiliation":[{"name":"Weipers Centre for Equine Welfare School of Veterinary Medicine University of Glasgow UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R. J. M.","family":"Reardon","sequence":"additional","affiliation":[{"name":"Weipers Centre for Equine Welfare School of Veterinary Medicine University of Glasgow UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M. S.","family":"Johnston","sequence":"additional","affiliation":[{"name":"Mark Johnston Racing Limited Middleham Leyburn UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P. J.","family":"Pollock","sequence":"additional","affiliation":[{"name":"Weipers Centre for Equine Welfare School of Veterinary Medicine University of Glasgow UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2013,3,21]]},"reference":[{"key":"e_1_2_11_2_1","first-page":"34","article-title":"Evaluation of the young horse upper airway: what is normal, and what is acceptable?","volume":"44","author":"Embertson R.M.","year":"1998","journal-title":"Proc. Am. Ass. Equine Practnrs."},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.2460\/javma.236.6.669"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.2460\/javma.2001.219.962"},{"key":"e_1_2_11_5_1","first-page":"113","article-title":"Correlation of racing performance to yearling endoscopic evaluation","volume":"47","author":"Pierce S.W.","year":"2001","journal-title":"Proc. Am. Ass. 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