Clinical Research Directory

Inclusion criteria: * Age greater than or equal to 4 or \<26 years at time of surgery * Undergoing urologic reconstructive surgery that includes primary bowel anastomosis (i.e., creation of continent ileovesicostomy \[Monti\], sigmoid Monti channel, enterocystoplasty) * Undergoing urologic reconstructive surgery that includes possible bowel anastomosis (planned creation of continent appendicovesicostomy \[Mitrofanoff\] with inability to use appendix at time of surgery and creation of alternative channel requiring primary bowel anastomosis) Exclusion criteria: • Clinically constipated (defined as Bristol 1 or 2 stools more than once per week, bowel movement interval \> every other day \[e.g. only has bowel movement every 3 days, or palpable stool in \> 50% of colon on physical preoperative exam)