{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T08:25:06Z","timestamp":1788942306984,"version":"build-2803163510"},"reference-count":19,"publisher":"American Animal Hospital Association","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2019]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>Movement of food material in the esophagus during upright feeding in dogs with megaesophagus (ME) is poorly characterized. A standardized contrast videofluoroscopy technique was used to evaluate esophageal transit characteristics in dogs with ME while in an upright position. Twelve dogs with ME (congenital, acquired idiopathic, or secondary to myasthenia gravis) were placed in an upright position using Bailey chairs and given liquid barium, canned food meatballs, and their normal diet consistency if different than meatballs. Passage of ingesta was videofluoroscopically evaluated by direct observation and change in ingesta area as determined by manual tracing or barium column product calculations. Significant individual variation was seen. Complete esophageal clearance of liquid was seen in four dogs, and complete clearance of meatballs in three dogs, with a median time of 5 min for both. Two of seven dogs fed a slurry diet had complete clearance by 10 min. No significant difference was found between area calculated via tracing or barium column product. Based on imaging results, alterations in food consistency, duration upright, or medication were recommended for nine dogs. In dogs with ME accustomed to a Bailey chair, contrast videofluoroscopy was technically straightforward and allowed for more specific physician-guided management recommendations.<\/jats:p>","DOI":"10.5326\/jaaha-ms-6711","type":"journal-article","created":{"date-parts":[[2019,5,17]],"date-time":"2019-05-17T10:48:53Z","timestamp":1558090133000},"page":"167-177","source":"Crossref","is-referenced-by-count":11,"title":["Technique for Evaluation of Gravity-Assisted Esophageal Transit Characteristics in Dogs with Megaesophagus"],"prefix":"10.5326","volume":"55","author":[{"given":"Jillian M.","family":"Haines","sequence":"first","affiliation":[{"name":"From the Department of Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, Washington (J.M.H.); Upstate Veterinary Specialties, Latham, New York (A.K.); and Department of Clinical Sciences, College of Veterinary Medicine, Mississippi State University, Starkville, Mississippi (E.B., J.M.T., A.J.M.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alison","family":"Khoo","sequence":"additional","affiliation":[{"name":"From the Department of Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, Washington (J.M.H.); Upstate Veterinary Specialties, Latham, New York (A.K.); and Department of Clinical Sciences, College of Veterinary Medicine, Mississippi State University, Starkville, Mississippi (E.B., J.M.T., A.J.M.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Erin","family":"Brinkman","sequence":"additional","affiliation":[{"name":"From the Department of Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, Washington (J.M.H.); Upstate Veterinary Specialties, Latham, New York (A.K.); and Department of Clinical Sciences, College of Veterinary Medicine, Mississippi State University, Starkville, Mississippi (E.B., J.M.T., A.J.M.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John M.","family":"Thomason","sequence":"additional","affiliation":[{"name":"From the Department of Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, Washington (J.M.H.); Upstate Veterinary Specialties, Latham, New York (A.K.); and Department of Clinical Sciences, College of Veterinary Medicine, Mississippi State University, Starkville, Mississippi (E.B., J.M.T., A.J.M.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew J.","family":"Mackin","sequence":"additional","affiliation":[{"name":"From the Department of Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, Washington (J.M.H.); Upstate Veterinary Specialties, Latham, New York (A.K.); and Department of Clinical Sciences, College of Veterinary Medicine, Mississippi State University, Starkville, Mississippi (E.B., J.M.T., A.J.M.)."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"3280","reference":[{"issue":"5","key":"bib1","series-title":"Vet Clin North Am Small Anim Pract","first-page":"1007","article-title":"Gastrointestinal motility disorders and gastrointestinal prokinetic therapy","volume":"33","author":"Washabau\n              RJ","year":"2003","unstructured":"Washabau\n              RJ\n            \n          . Gastrointestinal motility disorders and gastrointestinal prokinetic therapy. Vet Clin North Am Small Anim Pract2003;33(5):1007\u201328."},{"issue":"11","key":"bib2","series-title":"J Am Vet Med Assoc","first-page":"1406","article-title":"Risk factors for acquired megaesophagus in dogs","volume":"211","author":"Gaynor\n              AR","year":"1997","unstructured":"Gaynor\n              AR\n            , ShoferFS, WashabauRJ. Risk factors for acquired megaesophagus in dogs. J Am Vet Med Assoc1997;211(11):1406\u201312."},{"issue":"12","key":"bib3","series-title":"J Am Vet Med Assoc","first-page":"1622","article-title":"Clinical factors associated with death before discharge and overall survival time in dogs with generalized megaesophagus","volume":"238","author":"McBrearty\n              AR","year":"2011","unstructured":"McBrearty\n              AR\n            , RamseyIK, CourcierEA, et al.\n          Clinical factors associated with death before discharge and overall survival time in dogs with generalized megaesophagus. J Am Vet Med Assoc2011;238(12):1622\u20138."},{"issue":"5","key":"bib4","series-title":"J Am Vet Med Assoc","first-page":"443","article-title":"Megaesophagus in the dog: a clinical survey of 79 cases","volume":"165","author":"Harvey\n              CE","year":"1974","unstructured":"Harvey\n              CE\n            , O'BrienJA, DurieVR, et al.\n          Megaesophagus in the dog: a clinical survey of 79 cases. J Am Vet Med Assoc1974;165(5):443\u20136."},{"issue":"1","key":"bib5","series-title":"J Am Anim Hosp Assoc","first-page":"33","article-title":"Megaesophagus in the dog: A review of 50 cases","volume":"21","author":"Boudrieau\n              R","year":"1985","unstructured":"Boudrieau\n              R\n            , RogersW. Megaesophagus in the dog: A review of 50 cases. J Am Anim Hosp Assoc1985;21(1):33\u201340."},{"key":"bib6","series-title":"ISRN Vet Sci","first-page":"238505","article-title":"Imaging evaluation of dogs and cats with dysphagia","volume":"2012","author":"Pollard\n              RE","year":"2012","unstructured":"Pollard\n              RE\n            \n          . Imaging evaluation of dogs and cats with dysphagia. ISRN Vet Sci2012;2012:238505."},{"issue":"4","key":"bib7","series-title":"J Vet Intern Med","first-page":"801","article-title":"Effects of body positioning on swallowing and esophageal transit in healthy dogs","volume":"23","author":"Bonadio\n              C","year":"2009","unstructured":"Bonadio\n              C\n            , PollardR, DaytonPA, et al.\n          Effects of body positioning on swallowing and esophageal transit in healthy dogs. J Vet Intern Med2009;23(4):801\u20135."},{"issue":"5","key":"bib8","series-title":"Am J Physiol Gastrointest Liver Physiol","first-page":"G1000","article-title":"Bolus transit patterns in healthy subjects: a study using simultaneous impedance monitoring, videoesophagram, and esophageal manometry","volume":"288","author":"Imam\n              H","year":"2005","unstructured":"Imam\n              H\n            , ShayS, AliA, et al.\n          Bolus transit patterns in healthy subjects: a study using simultaneous impedance monitoring, videoesophagram, and esophageal manometry. Am J Physiol Gastrointest Liver Physiol2005;288(5):G1000\u20136."},{"issue":"2","key":"bib9","series-title":"Vet Surg","first-page":"139","article-title":"Esophageal dysfunction in dogs with idiopathic laryngeal paralysis: a controlled cohort study","volume":"39","author":"Stanley\n              BJ","year":"2010","unstructured":"Stanley\n              BJ\n            , HauptmanJG, FritzMC, et al.\n          Esophageal dysfunction in dogs with idiopathic laryngeal paralysis: a controlled cohort study. Vet Surg2010;39(2):139\u201349."},{"issue":"5","key":"bib10","series-title":"J Thorac Cardiovasc Surg","first-page":"935","article-title":"Timed barium esophagogram: A simple physiologic assessment for achalasia","volume":"120","author":"Kostic\n              SV","year":"2000","unstructured":"Kostic\n              SV\n            , RiceTW, BakerME, et al.\n          Timed barium esophagogram: A simple physiologic assessment for achalasia. J Thorac Cardiovasc Surg2000;120(5):935\u201343."},{"issue":"2","key":"bib11","series-title":"J Neurogastroenterol Motil","first-page":"251","article-title":"How to perform and interpret timed barium esophagogram","volume":"19","author":"Neyaz\n              Z","year":"2013","unstructured":"Neyaz\n              Z\n            , GuptaM, GhoshalUC. How to perform and interpret timed barium esophagogram. J Neurogastroenterol Motil2013;19(2):251\u20136."},{"issue":"2","key":"bib12","series-title":"AJR Am J Roentgenol","first-page":"473","article-title":"Timed barium swallow: a simple technique for evaluating esophageal emptying in patients with achalasia","volume":"169","author":"de Oliveira\n              JM","year":"1997","unstructured":"de Oliveira\n              JM\n            , BirgissonS, DoinoffC, et al.\n          Timed barium swallow: a simple technique for evaluating esophageal emptying in patients with achalasia. AJR Am J Roentgenol1997;169(2):473\u20139."},{"issue":"Suppl 1","key":"bib13","series-title":"Neurogastroenterol Motil","first-page":"13","article-title":"The lower oesophageal sphincter","volume":"17","author":"Boeckxstaens\n              G","year":"2005","unstructured":"Boeckxstaens\n              G\n            \n          . The lower oesophageal sphincter. Neurogastroenterol Motil2005;17(Suppl 1):13\u201321."},{"issue":"9","key":"bib14","series-title":"Neurogastroenterol Motil","first-page":"819","article-title":"The lower esophageal sphincter","volume":"23","author":"Hershcovici\n              T","year":"2011","unstructured":"Hershcovici\n              T\n            , MashimoH, FassR. The lower esophageal sphincter. Neurogastroenterol Motil2011;23(9):819\u201330."},{"key":"bib15","series-title":"Canine and Feline Gastroenterology","author":"Washabau\n              RJ","year":"2013","unstructured":"Washabau\n              RJ\n            , DayMJ. Canine and Feline Gastroenterology. St. Louis: Elsevier Saunders; 2013."},{"key":"bib16","article-title":"Videofluoroscopic swallow study (VFSS) protocol identifies a possible link between canine lower esophageal achalasia\/dyssynchrony and megaesophagus [abstract]","author":"Schachtel\n              J","unstructured":"Schachtel\n              J\n            , LattimerJ, GrobmanM, et al.\n          Videofluoroscopic swallow study (VFSS) protocol identifies a possible link between canine lower esophageal achalasia\/dyssynchrony and megaesophagus [abstract]. In: American College of Veterinary Radiology Annual Scientific Conference; October 19\u201322, 2016; Orlando, FL."},{"issue":"35","key":"bib17","series-title":"World J Gastroenterol","first-page":"5806","article-title":"Achalasia: a review of clinical diagnosis, epidemiology, treatment and outcomes","volume":"19","author":"O\u2019Neill\n              OM","year":"2013","unstructured":"O\u2019Neill\n              OM\n            , JohnstonBT, ColemanHG. Achalasia: a review of clinical diagnosis, epidemiology, treatment and outcomes. World J Gastroenterol2013;19(35):5806\u201312."},{"issue":"2","key":"bib18","series-title":"J Vet Intern Med","first-page":"661","article-title":"Achalasia-like disease with esophageal pressurization in a myasthenic dog","volume":"28","author":"Kempf\n              J","year":"2014","unstructured":"Kempf\n              J\n            , BeckmannK, KookPH. Achalasia-like disease with esophageal pressurization in a myasthenic dog. J Vet Intern Med2014;28(2):661\u20135."},{"issue":"3","key":"bib19","series-title":"Can Vet J","first-page":"232","article-title":"Esophageal achalasia and secondary megaesophagus in a dog","volume":"44","author":"Boria\n              PA","year":"2003","unstructured":"Boria\n              PA\n            , WebsterCR, BergJ. Esophageal achalasia and secondary megaesophagus in a dog. Can Vet J2003;44(3):232\u20134."}],"container-title":["Journal of the American Animal Hospital Association"],"original-title":[],"link":[{"URL":"https:\/\/jaaha.kglmeridian.com\/view\/journals\/aaha\/55\/4\/article-p167.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/meridian.allenpress.com\/jaaha\/article-pdf\/55\/4\/167\/2466113\/jaaha-ms-6711.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/jaaha.kglmeridian.com\/downloadpdf\/journals\/aaha\/55\/4\/article-p167.xml","content-type":"text\/html","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/jaaha.kglmeridian.com\/downloadpdf\/journals\/aaha\/55\/4\/article-p167.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,11,21]],"date-time":"2025-11-21T16:03:33Z","timestamp":1763741013000},"score":1,"resource":{"primary":{"URL":"https:\/\/jaaha.kglmeridian.com\/view\/journals\/aaha\/55\/4\/article-p167.xml"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019]]},"references-count":19,"journal-issue":{"issue":"4"},"URL":"https:\/\/doi.org\/10.5326\/jaaha-ms-6711","relation":{},"ISSN":["0587-2871","1547-3317"],"issn-type":[{"value":"0587-2871","type":"print"},{"value":"1547-3317","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019]]}}}