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Megaesôfago em muar / Megaesophagus in mule

Strugava, Lucimara; Rossa, Ana Paula; Gomes, Anny Raissa Carolini; Lorga, Andressa Duarte; Lautert, Betina Fabis; Deconto, Ivan; Sousa, Renato Silva de; Dornbusch, Peterson Triches.
Acta sci. vet. (Online); 48(suppl.1): Pub. 532, 23 set. 2020. ilus
Artigo em Português | VETINDEX | ID: vti-765358


Background: Megaesophagus is a chronic dilation of the esophagus rarely found in horses. Its a non-specific disease that is associated with several causes, and esophageal hypomotility is the dysfunction that most commonly results in organ dilation. In the literature, there are few reports of megaesophagus in horses and, to date, no cases in mule have been reported. The objective of this work is to describe a case of a donkey with thoracic megaesophagus. Case: A 16 year-old donkey, castrated male, mixed breed weighing 195 kg, was referred for clinical care with a history of 5 days of anorexia. On physical examination, apathy, cachexia, 8% dehydration, moderate enophthalmos, ptialism, bilateral nasal discharge, dry and bristling hair were observed. Due to the poor general condition, a nasogastric tube was chosen to perform enteral nutrition, however, it was not possible to progress the tube to the stomach. In order to confirm the suspicion of a possible esophageal obstruction, gastroscopy was performed, where it was possible to observe an esophageal dilation filled with bulky food located in the thoracic portion of the esophagus. In an attempt to stimulate esophageal motility, in order to promote the progression of the material present in the region of dilation, intramuscular metoclopramide was administered (two applications every 6 h), however the treatment had no effect. Due to the unfavorable prognosis and financial limitations of the owner, euthanasia was performed, which was followed by autopsy and histopathological examination. At necropsy, a marked dilation of the esophagus was observed in the thoracic portion, which was filled with approximately 500 grams of bulky food (grass). In the mucosa of this area...(AU)
Biblioteca responsável: BR68.1
Localização: BR68.1