Piloroplastia em Y-U para a correção de gastropatia hipertrófica pilórica crônica em caninos : relato de três casos

Abstract

One of the causes of delay gastric emptying is the Chronic hypertrophic pyloric gastropathy, unusual disease that can occur in acquired or congenital form. It is characterized by hypertrophy of the antral mucosa, by thickening of the muscular layer, or by hyperplasia of the pylorus. Thus, the aim was report three cases of pyloric stenosis by hypertrophy in dogs of the breeds, Fila Brasileiro, English Bull Terrier and American Pitbull Terrier, emphasizing the diagnosis and therapy instituted. Case: The aim of this study was to report three cases of hypertrophic pyloric gastropathy in three dogs of different breeds and ages, one Fila Brasileiro, one English Bull Terrier and one American Pit Bull Terrier, all of them had presented a history of chronic intermittent vomiting. The findings of physical and laboratory examinations in all animals were unspecific, with those important to rule out other causes of vomiting. Contrast radiographic evaluation revealed marked stomach distension and delayed gastric emptying, indicated gastric outflow obstruction. As therapeutic approach, we opted for performing the surgical technique of pyloroplasty in YU, consisting of enlarging the diameter of the antral pyloric region in an attempt to create a broader pylorus, what make possible an emptying a gastric rapidly. All the pacients remained in hospital in the postoperative period receiving medications intravenously. Twelve hours of fasting after the surgical procedure without vomiting, the dog received light past food. An average of three to fourd days post-surgical discharged with recommendations to keep antibiotecorapia for ten days and light diet. The fifteenth day of surgery, the pacient returned for removal of skin spots, with good genereal condition and satisfactory healing. No cases of vomiting was reported. As the case one returned to perform the monitoring gastograma. The dog was anesthetized and giving the contrast. On radiographs, there was a slight delay in gastric emptying, with stomach and intestines in size, shape and normal position. The technique was satisfactory in reducing clinical signs in all the these cases, confirmed by the absence of vomiting in the postoperative period and standardization of transit in contrast cystography. Discussion: It was possible to demonstrate with only three cases the pyloroplasty Y-U proved to be a simple and effective technique for the treatment of hypertrophic pyloric stenosis with a favorable prognosis in all cases. Thus, disease should be considered in the differential diagnosis in cases of gastric outflow obstruction, regardless of patient's age.