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We hypothesized that brachycephalic dogs would have pharyngeal collapse more frequently than dolichocephalic or mesocephalic dogs with or without airway collapse. The medical records database was searched for brachycephalic dogs undergoing videofluoroscopy of swallowing or airway diameter between January 1, 2006 and December 31, 2015. A cohort of dolichocephalic\/mesocephalic dogs with videofluoroscopically confirmed airway collapse was age and time matched for comparison. A control group of dolichocephalic\/mesocephalic dogs that did not have documented airway collapse was also evaluated. All fluoroscopic studies were assessed by a board certified veterinary radiologist for the presence and degree of pharyngeal collapse. Results demonstrate that pharyngeal collapse was significantly more common in brachycephalic dogs (58\/82; 72%) than in nonbrachycephalic dogs with (7\/25; 28%) and without (2\/30; 7%) airway collapse. Pharyngeal collapse is more prevalent in brachycephalic dogs undergoing videofluoroscopy than in dolichocephalic\/mesocephalic dogs with or without airway collapse.<\/jats:p>","DOI":"10.1111\/vru.12655","type":"journal-article","created":{"date-parts":[[2018,6,22]],"date-time":"2018-06-22T00:32:58Z","timestamp":1529627578000},"page":"529-534","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":31,"title":["The prevalence of dynamic pharyngeal collapse is high in brachycephalic dogs undergoing videofluoroscopy"],"prefix":"10.1111","volume":"59","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2986-1827","authenticated-orcid":false,"given":"Rachel E.","family":"Pollard","sequence":"first","affiliation":[{"name":"Department of Surgical and Radiological Sciences, School of Veterinary Medicine University of California, Davis  Davis CA 95616"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lynelle R.","family":"Johnson","sequence":"additional","affiliation":[{"name":"Department of Medicine and Epidemiology, School of Veterinary Medicine University of California, Davis  Davis CA 95616"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stanley L.","family":"Marks","sequence":"additional","affiliation":[{"name":"Department of Medicine and Epidemiology, School of Veterinary Medicine University of California, Davis  Davis CA 95616"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2018,6,21]]},"reference":[{"key":"e_1_2_7_2_1","first-page":"E549","article-title":"Sleep apnea and mandibular advancement device. 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