{"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":1789662692217,"version":"4.0.1"},"reference-count":15,"publisher":"American Veterinary Medical Association (AVMA)","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["javma"],"published-print":{"date-parts":[[2007,2,15]]},"abstract":"<jats:title>Abstract<\/jats:title>\n<jats:p><jats:bold>Case Description<\/jats:bold>\u20143 racehorses were evaluated because of poor performance or abnormal noise originating from the upper portion of the respiratory tract.<\/jats:p>\n<jats:p><jats:bold>Clinical Findings<\/jats:bold>\u2014During maximal exercise, initial dynamic videoendoscopy of the upper respiratory tract revealed complete arytenoid cartilage abduction in 2 horses and incomplete but adequate abduction of the left arytenoid cartilage in 1 horse. Subsequent exercising endoscopic evaluation revealed severe dynamic collapse of the left arytenoid cartilage and vocal fold in all 3 horses.<\/jats:p>\n<jats:p><jats:bold>Treatment and Outcome<\/jats:bold>\u20142 horses were treated with prosthetic left laryngoplasty and raced successfully. One horse was retired from racing.<\/jats:p>\n<jats:p><jats:bold>Clinical Relevance<\/jats:bold>\u2014Idiopathic laryngeal hemiplegia can be a progressive disease. Successive dynamic videoendoscopic upper airway evaluations were used to confirm progression of left laryngeal hemiplegia in these 3 horses. Videoendoscopy of the upper respiratory tract during exercise should be considered as part of the clinical evaluation of horses with signs of upper respiratory tract dysfunction.<\/jats:p>","DOI":"10.2460\/javma.230.4.555","type":"journal-article","created":{"date-parts":[[2007,2,15]],"date-time":"2007-02-15T12:57:48Z","timestamp":1171544268000},"page":"555-558","source":"Crossref","is-referenced-by-count":18,"title":["Use of successive dynamic videoendoscopic evaluations to identify progression of recurrent laryngeal neuropathy in three horses"],"prefix":"10.2460","volume":"230","author":[{"given":"Elizabeth J.","family":"Davidson","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Benson B.","family":"Martin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eric J.","family":"Parente","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1272","reference":[{"key":"ref1","series-title":"Vet Surg","first-page":"174","article-title":"The reliability of endoscopic examination in assessment of arytenoid cartilage movement in horses. Part I: subjective and objective laryngeal evaluation","volume":"20","author":"Hackett","year":"1991"},{"key":"ref2","series-title":"J Am Vet Med Assoc","first-page":"399","article-title":"Videoendoscopic assessment of dynamic laryngeal function during exercise in horses with grade-III left laryngeal hemiparesis at rest: 26 cases (1992\u20131995)","volume":"212","author":"Hammer","year":"1998"},{"key":"ref3","series-title":"Equine Vet J Suppl","first-page":"408","article-title":"Dynamic upper air-way changes and arterial blood gas parameters during treadmill exercise","volume":"34","author":"Durando","year":"2002"},{"key":"ref4","series-title":"J Am Vet Med Assoc","first-page":"554","article-title":"Causes of poor performance of horses during training, racing, or showing: 348 cases (1992\u20131996)","volume":"216","author":"Martin","year":"2000"},{"key":"ref5","series-title":"Annu Meet Am Assoc Equine Pract","first-page":"170","article-title":"Correlation between standing endoscopic examinations and those made during high-speed exercise in horses: 150 cases, in Proceedings","author":"Parente","year":"1995"},{"key":"ref6","series-title":"Aust Vet J","first-page":"109","article-title":"Evaluation of high-speed treadmill videoendoscopy for diagnosis of upper respiratory tract dysfunction in horses","volume":"79","author":"Dart","year":"2001"},{"key":"ref7","series-title":"Aust Vet J","first-page":"101","article-title":"Endoscopy of the upper respiratory tract during treadmill exercise: a clinical study of 100 horses","volume":"72","author":"Kannegieter","year":"1995"},{"key":"ref8","series-title":"N Z Vet J","first-page":"188","article-title":"Endoscopic observations on laryngeal symmetry and movements in young racing horses","volume":"45","author":"Anderson","year":"1997"},{"key":"ref9","series-title":"Equine exercise physiology","first-page":"46","article-title":"Laryngeal asynchrony in the horse: definition and significance","author":"Baker","year":"1982"},{"key":"ref10","series-title":"Equine Vet J","first-page":"29","article-title":"Clinical and endoscopic evidence of progression in 52 cases of equine recurrent laryngeal neuropathy (RLN)","volume":"34","author":"Dixon","year":"2002"},{"key":"ref11","series-title":"N Z Vet J","first-page":"194","article-title":"Equine laryngeal hemiplegia part II: some clinical observations","volume":"29","author":"Goulden","year":"1981"},{"key":"ref12","series-title":"J Am Vet Med Assoc","first-page":"1689","article-title":"Career racing performance in Thoroughbreds treated with prosthetic laryngoplasty for laryngeal neuropathy: 52 cases (1981\u20131989)","volume":"217","author":"Strand","year":"2000"},{"key":"ref13","series-title":"Am J Vet Res","first-page":"659","article-title":"Spectrum analysis of respiratory sounds in exercising horses with experimentally induced laryngeal hemiplegia or dorsal displacement of the soft palate","volume":"62","author":"Derksen","year":"2001"},{"key":"ref14","series-title":"Equine Vet J","first-page":"264","article-title":"Spectral analysis of respiratory noise in horses with upper airway disorders","volume":"35","author":"Franklin","year":"2003"},{"key":"ref15","series-title":"Am J Vet Res","first-page":"1707","article-title":"Sound signature for identification and quantification of upper airway disease in horses","volume":"63","author":"Cable","year":"2002"}],"container-title":["Journal of the American Veterinary Medical Association"],"original-title":[],"link":[{"URL":"https:\/\/avmajournals.avma.org\/view\/journals\/javma\/230\/4\/javma.230.4.555.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/avmajournals.avma.org\/downloadpdf\/journals\/javma\/230\/4\/javma.230.4.555.xml","content-type":"text\/html","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/avmajournals.avma.org\/downloadpdf\/journals\/javma\/230\/4\/javma.230.4.555.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,3,7]],"date-time":"2025-03-07T13:34:26Z","timestamp":1741354466000},"score":1,"resource":{"primary":{"URL":"https:\/\/avmajournals.avma.org\/view\/journals\/javma\/230\/4\/javma.230.4.555.xml"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2007,2,15]]},"references-count":15,"journal-issue":{"issue":"4"},"URL":"https:\/\/doi.org\/10.2460\/javma.230.4.555","relation":{},"ISSN":["0003-1488"],"issn-type":[{"value":"0003-1488","type":"print"}],"subject":[],"published":{"date-parts":[[2007,2,15]]}}}