title: Simple radiographic evaluation of ileoanal pouch volume.
abstract: OBJECTIVE
  Total colectomy and mucosal protectomy with ileal reservoir and anal pull-through is used in the treatment of ulcerative colitis or familial polyposis, with one complication being frequent bowel movements. A simple radiographic test to predict frequency of bowel movements and measure spasticity was evaluated.
  
  
  METHODS
  Fourteen patients underwent evaluation after ileal reservoir and anal pull-through J-pouch construction. Barium sulfate suspension was instilled into the pouch via the anus in the standing position until reflux flowed into the small intestine proximal to the pouch and patients felt the urge to defecate. Total volume infused (VOLtot), volume to reflux (VOLrflx), and volume voided (VOLvoid) were measured.
  
  
  RESULTS
  VOLvoid and the "voiding efficiency" (VOLvoid/VOLtot) correlated significantly with stool frequency (R=-0.744, P<0.002 and R=-0.754, P<0.002, respectively). Time from operation was correlated with VOLvoid and stool frequency (R=-0.723, P<0.003 and RO.573, P<0.032, respectively).
  
  
  CONCLUSIONS
  The addition of quantitative measurements to this radiographic test gives useful information about pouch performance. Furthermore, the data imply that spasticity, as measured by voiding quantum and efficiency, rather than actual pouch volume is a major determinant of bowel movement frequency.
authors.affiliation: Department of Surgery, The Johns Hopkins Medical Institutions, Baltimore, Maryland 21287-4665, USA.
authors.forename: C M
authors.initials: CM
authors.lastname: Schmidt
authors.forename: K M
authors.initials: KM
authors.lastname: Horton
authors.forename: J V
authors.initials: JV
authors.lastname: Sitzmann
authors.forename: B
authors.initials: B
authors.lastname: Jones
authors.forename: T
authors.initials: T
authors.lastname: Bayless
mesh_terms: D000328:Adult; D001466:Barium Sulfate; D003093:Colitis, Ulcerative / Q000601:surgery*; D003672:Defecation / Q000502:physiology*; D016002:Discriminant Analysis; D004733:Enema; D005242:Fecal Incontinence / Q000000981:diagnostic imaging* / Q000209:etiology / Q000503:physiopathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D016737:Proctocolectomy, Restorative / Q000009:adverse effects*; D011859:Radiography
chemical_list: D001466:Barium Sulfate