{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,11]],"date-time":"2026-07-11T17:23:45Z","timestamp":1783790625786,"version":"3.55.0"},"reference-count":20,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2016,3,7]],"date-time":"2016-03-07T00:00:00Z","timestamp":1457308800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Vet Radiology Ultrasound"],"published-print":{"date-parts":[[2016,5]]},"abstract":"<jats:p>Dexmedetomidine, an alpha<jats:sub>2<\/jats:sub>\u2010adrenergic agonist, may be used in companion animals for chemical restraint, including cardiac evaluation. Echocardiographic changes associated with alpha<jats:sub>2<\/jats:sub>\u2010adrenergic agonists have been described; however reports of radiographic changes in cats were not found at the time of this study. Aims of this observational, prospective, experimental study were to describe the effects of dexmedetomidine on the radiographic appearance of the cardiac silhouette in healthy, adult cats. Fourteen healthy adult cats received dexmedetomidine 40 mcg\/kg IM. Right lateral, left lateral, ventrodorsal, and dorsoventral thoracic radiographs were obtained for each cat at three time points: presedation, intrasedation, and postsedation (\u2265 two hours after reversal with atipamezole). Radiographs were evaluated in a blinded, randomized fashion by two independent observers using the vertebral heart score on all four views, the number of intercostal spaces on lateral projections, and the percent width of thorax on ventrodorsal and dorsoventral projections. Median vertebral heart score on right lateral view was significantly increased intrasedation (median = 7.8; range = 7.25\u20138.25) compared to presedation (median = 7.5; range = 7\u20138 [<jats:italic>P<\/jats:italic>= 0.001]). Median percentage width was significantly higher intrasedation (70% on VD; range 65\u201380 [<jats:italic>P<\/jats:italic>= 0.001], and 75% on DV; range 65\u201380 [<jats:italic>P<\/jats:italic>= 0.006]) compared to presedation (65%; range 65\u201375 on both projections). Dexmedetomidine was associated with a small but significant increase in cardiac silhouette size on right lateral (vertebral heart score), ventrodorsal (percentage width), and dorsoventral (percentage width) radiographs in healthy adult cats. This effect should be taken into consideration for future interpretation of thoracic radiographs in dexmedetomidine\u2010sedated cats.<\/jats:p>","DOI":"10.1111\/vru.12346","type":"journal-article","created":{"date-parts":[[2016,3,7]],"date-time":"2016-03-07T22:38:39Z","timestamp":1457390319000},"page":"230-236","source":"Crossref","is-referenced-by-count":12,"title":["THE EFFECT OF DEXMEDETOMIDINE ON RADIOGRAPHIC CARDIAC SILHOUETTE SIZE IN HEALTHY CATS"],"prefix":"10.1111","volume":"57","author":[{"given":"Lesley A.","family":"Zwicker","sequence":"first","affiliation":[{"name":"Department of Companion Animals, Atlantic Veterinary College University of Prince Edward Island Charlottetown Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrea R.","family":"Matthews","sequence":"additional","affiliation":[{"name":"Antech Imaging Services St. John's Newfoundland Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Etienne","family":"C\u00f4t\u00e9","sequence":"additional","affiliation":[{"name":"Department of Companion Animals, Atlantic Veterinary College University of Prince Edward Island Charlottetown Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Erin","family":"Andersen","sequence":"additional","affiliation":[{"name":"Department of Companion Animals, Atlantic Veterinary College University of Prince Edward Island Charlottetown Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2016,3,7]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1467-2995.2005.00259.x"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1467-2995.2005.00233.x"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1006\/phrs.2001.0857"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.2460\/javma.2002.221.1276"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1751-0813.1996.tb09962.x"},{"key":"e_1_2_6_7_1","doi-asserted-by":"crossref","first-page":"194","DOI":"10.2460\/javma.1995.206.02.194","article-title":"Vertebral scale system to measure canine heart size in radiographs","volume":"206","author":"Buchanan JW","year":"1995","journal-title":"J Am Vet Med Assoc"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.2460\/javma.2000.216.210"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1748-5827.1987.tb05977.x"},{"key":"e_1_2_6_10_1","first-page":"351","volume-title":"Thoracic radiography: a text atlas of thoracic diseases of the dog and cat","author":"Suter PF","year":"1984"},{"key":"e_1_2_6_11_1","first-page":"462","volume-title":"Textbook of veterinary diagnostic radiology","author":"Berry CR","year":"2007"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.2460\/javma.2002.220.202"},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.1177\/1098612X14522048"},{"key":"e_1_2_6_14_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1939-1676.1993.tb01015.x"},{"key":"e_1_2_6_15_1","unstructured":"Dexdomitor [package insert].Zoetis New York NY;2010.Online.zoetis.com\/US\/EN\/products\/pages\/Dexdomitor. 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