Anastomotic leaks after roux-en Y gastric bypass for morbid obesityBackground: Obesity is a severe disease whose prevalence continues to increase. Resective gastric bypass is one of the surgical procedures used in our center in patients with obesity, but like other techniques is not without complications, and the leak is one of the most serious. The use of drains and leak test with methylene blue during surgery, such as barium x-ray were performed in all patients as part of a protocol. Clinical signs, development, testing and treatment were recorded. Results: 36 patients (4%) developed leaks. Of the 900 patients died 3 (0.33%). Fever and tachycardia were the predominant symptoms. The diagnosis was made by imaging studies in 19 cases (52.7%). The leaks were mostly between 5 th and 9 th postoperative day. The most frequent location of the leak was at the gastrojejunal anastomosis (58.3%). Treatment was medical in 24 patients (66.7%), requiring re-operation only in 12 cases. The average time of closure of the leak was 35.5 days and the patients were hospitalized a total of 33.7 days on average. Conclusions: In the series studied after resective gastric bypass the leak is presented in 4% of patients. Fever and tachycardia are useful signs to suspect a leak. The early detection of leaks is determinant to reach the best evolution of the patient and success in the treatment.Key words: Leak, complications, morbid obesity, gastric bypass, morbidity.
ResumenIntroducción: La obesidad es una enfermedad severa cuya prevalencia continúa en incremento. El bypass gástrico resectivo, es una intervención quirúrgica realizada en nuestro centro, para obesidad; al igual que otras técnicas no está exenta de complicaciones, siendo la filtración una de las más graves. Objetivos: Determinar mediante estudio prospectivo la incidencia, presentación clínica, evolución y tratamiento de pacientes obesos con filtraciones después de bypass gástrico resectivo vía abierta. Material y Método: Desde agosto de 1999 a diciembre de 2009, 900 obesos mórbidos fueron sometidos a bypass gástrico resectivo en Y de Roux vía abierta en el Hospital Clínico de la Universidad de Chile. Se realizó a los pacientes por protocolo, prueba con azul de metileno intraoperatoria y control radiológico con bario postoperatorio. Fue registrada la evolución, exámenes y tratamiento realizado. Resultados: 36 pacientes (4%) desarrollaron filtraciones. De 900Rev.