BACKGROUND: Reflux esophagitis complicated by stenosis and shortening of the organ is a difficult disease to surgical treatment with frequent failure. The Collis gastroplasty associated with a partial or total fundoplication can be employed in this situation. OBJECTIVE: To evaluate the technique of fundoplication with partial or total Collis gastroplasty in dogs. METHODS: Seven dogs underwent a Collis-Lind (Group A) and four to Collis-Nissen (Group B) after myotomy of the gastroesophageal junction; reflux was evaluated with measurements of pH and pressures in the esophagogastric transition with microtransducer. RESULTS: After myotomy reflux occurred freely in all animals. However, after Collis-Lind or Collis-Nissen procedures, it not ocurred spontaneously. The application of manual pressure on the stomach caused reflux in 28.5% of animals in Group A. The assessment of pressures in the surgical specimen showed no difference in the area of high pressure in both groups. CONCLUSION: The Collis-Lind and Collis-Nissen procedures prevent gastroesophageal reflux. The pressure measurements and the extension of the high pressure zone were similar in both groups.
Esophagitis, peptic; Esophageal stenosis; Models, animal
