You have accessJournal of UrologyPediatrics: Basic Research1 Apr 2011267 EXPERIMENTAL EVALUATION OF MUSCULAR BEHAVIOR AFTER CROSSING TWO NON-DETACHED STRIPS OF RECTUS ABDOMINAL MUSCLE OVER A CATHETERIZABLE CHANNEL FOR URINARY STOMAS Eulalio Damazio, Deny Schmidt, Herick Bacelar, Juliano Carvalho, Sergio Ottoni, Valdemar Ortiz, and Antonio Macedo Eulalio DamazioEulalio Damazio São Paulo, Brazil More articles by this author , Deny SchmidtDeny Schmidt São Paulo, Brazil More articles by this author , Herick BacelarHerick Bacelar São Paulo, Brazil More articles by this author , Juliano CarvalhoJuliano Carvalho São Paulo, Brazil More articles by this author , Sergio OttoniSergio Ottoni São Paulo, Brazil More articles by this author , Valdemar OrtizValdemar Ortiz São Paulo, Brazil More articles by this author , and Antonio MacedoAntonio Macedo São Paulo, Brazil More articles by this author View All Author Informationhttps://doi.org/10.1016/j.juro.2011.02.358AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookTwitterLinked InEmail INTRODUCTION AND OBJECTIVES We have been using the technique of crossing two non-detached strips of rectus abdominal muscle over the channel for urinary stomas to increase resistance and avoid incontinence (Yachia principle). We designed a study in rabbits to define the histological behavior of the muscle in regards to the efferent tube. METHODS We operated 12 male New Zeeland rabbits and created a catheterizable channel based on 2 skin flaps of the skin (RPM technique) anastomosed to the bladder. The Yachia principle was done in 8 animals and 4 animals with no continence mechanism were used as controls. The animals were divided in 3 groups according to time until sacrifice at 8, 12 and 16 weeks postoperatively. An urodinamic study was performed before surgery and at sacrifice to record DLPP through the urethra and the stoma. A frozen immuno-histochemistry muscle biopsy (Gomori and ATPase staining) was performed close to the channel border and the channel had histopathology analysis. RESULTS Clinical outcome showed stoma stenosis as the main complication that occurred in 4 animals (33%). False passage occurred in 3 cases that interfered in the urodinamic results. Mean stoma DLPP was higher than urethral DPLL (32.2cm H20) and consisted of 84cm H20 for animals with cross-over and 100cm H20 for controls. The channel was histologically intact at the neoshincterical area and muscle evaluation showed initial partial necrosis but it recovered with hypertrophy at 16 weeks. CONCLUSIONS The rectus abdominal neosphincter was efficient to increase resistance to the channel without deleterious compression to the channel and muscle necrosis. © 2011 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 185Issue 4SApril 2011Page: e107 Advertisement Copyright & Permissions© 2011 by American Urological Association Education and Research, Inc.MetricsAuthor Information Eulalio Damazio São Paulo, Brazil More articles by this author Deny Schmidt São Paulo, Brazil More articles by this author Herick Bacelar São Paulo, Brazil More articles by this author Juliano Carvalho São Paulo, Brazil More articles by this author Sergio Ottoni São Paulo, Brazil More articles by this author Valdemar Ortiz São Paulo, Brazil More articles by this author Antonio Macedo São Paulo, Brazil More articles by this author Expand All Advertisement Advertisement PDF downloadLoading ...