Related Experiment Video
Updated: Apr 28, 2026
Robotic Myotomy and Partial Fundoplication for Achalasia
Published on: August 11, 2023
A new technique for performing endoscopic pyloromyotomy by gastric submucosal tunnel dissection
Dalton M Chaves1, Carla C Gusmon, Luiz H M Mestieri
1*Serviço de Endoscopia Gastrointestinal-Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo †Department of Pathology, University of São Paulo, School of Medicine, São Paulo, SP, Brazil.
Aim:
To investigate the feasibility of a new endoscopic pyloromyotomy technique.
Materials And Methods:
Endoscopic pyloromyotomy through a gastric submucosal tunnel was performed in 6 pigs. At the greater curvature, 2 cm proximal to the pylorus, we incised the mucosa and dissected the submucosal tunnel up to the pyloric ring. The pyloric muscular ring was sectioned, and then the gastric mucosal incision was closed with metallic clips. The pigs were then euthanized and necropsies were performed.
Results:
Section of the pyloric ring was successful in all 6 pigs. Small perforations occurred in 2 of the pigs, and there was limited bleeding in 1 pig. Necropsy and histologic evaluation confirmed the pyloric section.
Conclusions:
This technique is feasible, easy to perform, and maybe alternative to pyloroplasty in selected cases. Experimental comparative studies with other techniques still must be performed.
Related Concept Videos
01:25Peptic Ulcer Disease V: Surgical Management and Nursing Care
Surgical Interventions for Peptic Ulcer Disease
01:11Pyloric Obstruction