Fábio Yuji Hondo1, José Humberto Giordano-Nappi1, Fernanda Cristina Simões Pessorrusso1, Matheus Cavalcante Franco2, Carla Zanelatto Neves1, Ivan Cecconello3, Paulo Sakai1, Fauze Maluf-Filho4. 1. Gastrointestinal Endoscopy Unit, Department of Gastroenterology, Medical School of University of São Paulo, São Paulo, Brazil. 2. Gastrointestinal Endoscopy Unit, Department of Gastroenterology, Medical School of University of São Paulo, São Paulo, Brazil. mcavalcantefranco@gmail.com. 3. Gastrointestinal Surgery Division, Department of Gastroenterology, Medical School of University of São Paulo, Av. Dr. Enéas de Carvalho Aguiar, São Paulo, SP, 05403-000, Brazil. 4. Gastrointestinal Surgery Division, Department of Gastroenterology, Medical School of University of São Paulo, Av. Dr. Enéas de Carvalho Aguiar, São Paulo, SP, 05403-000, Brazil. fauze.maluf@terra.com.br.
Abstract
BACKGROUND: Complications of endoscopic treatment of pharyngoesophageal diverticulum (PED) such as bleeding and perforation occur in up to 15 % of cases. Our objective was to compare incision of the PED septum using the ultrasonic device (group H) with incision using electrical current (group M) in a pig model. METHODS: Twenty domestic pigs were divided into groups H and M. The incision of the PED septum was performed using the ultrasonic device or using electrical current, respectively. The procedural time, complication rate, length of the border of the incised septum, and thermal tissue damage were compared between groups. RESULTS: Mean time to divide the septum and total procedure time were significantly shorter in group H. Mean length of the border of the incised septum was significantly higher in group H. The lateral thermal spread caused by electrical current (group M) was more intense. Hemorrhage was exclusively observed in group M. CONCLUSION: Experimental endoscopic diverticulotomy using ultrasonic device was faster and caused less tissue damage when compared to electrical current.
BACKGROUND: Complications of endoscopic treatment of pharyngoesophageal diverticulum (PED) such as bleeding and perforation occur in up to 15 % of cases. Our objective was to compare incision of the PED septum using the ultrasonic device (group H) with incision using electrical current (group M) in a pig model. METHODS: Twenty domestic pigs were divided into groups H and M. The incision of the PED septum was performed using the ultrasonic device or using electrical current, respectively. The procedural time, complication rate, length of the border of the incised septum, and thermal tissue damage were compared between groups. RESULTS: Mean time to divide the septum and total procedure time were significantly shorter in group H. Mean length of the border of the incised septum was significantly higher in group H. The lateral thermal spread caused by electrical current (group M) was more intense. Hemorrhage was exclusively observed in group M. CONCLUSION: Experimental endoscopic diverticulotomy using ultrasonic device was faster and caused less tissue damage when compared to electrical current.