By means of clinical, endoscopic, manometric and pH metric studies, the incidence of gastroesophageal reflux in 30 patients with achalasia of the cardia was evaluated at least 5 years after undergoing surgical treatment using Heller’s myotomy associated with a 270° posterior partial fundoplication. Our results show that the procedure is efficient, not only because it obtains improvement or total disappearance of the achalasia symptoms, but also because it prevents postoperative gastroesophageal reflux, which was only recorded in 10% of the cases.