title: Chloride absorption in patients with a continent ileocaecal reservoir (Mainz pouch I).
abstract: OBJECTIVE
  To determine the rate of radioactive chloride absorption at various times after surgery in patients with a continent ileocaecal reservoir (Mainz pouch I).
  
  
  METHODS
  The study was conducted on 20 patients (15 males and five females, mean age 47 years, range 15-72) who had undergone a Mainz pouch I urinary diversion. The patients were divided into three groups according to the duration of the post-operative follow-up, i.e. group 1 for < 6 months (n = 7), group 2 for 6-12 months (n = 8) and group 3 for > 12 months (n = 5). Radioactive 38Cl (20 MBq) was instilled into the pouch and the radioactivity determined in the blood, pouch and body interstitium every 20 min for 3 h. Samples for arterial blood-gas and acid-base profiles were obtained before and after instillation.
  
  
  RESULTS
  In patients in group 1, 93% of the instilled chloride was absorbed into the circulation, while 51% was absorbed by patients in group 3. The acid-base profile showed no significant changes before and after chloride instillation.
  
  
  CONCLUSIONS
  The absorption of chloride declines markedly with time after surgery in patients with a Mainz pouch I ileocaecal reservoir.
authors.affiliation: Department of Urology, University of Mainz, School of Medicine, Germany.
authors.forename: D
authors.initials: D
authors.lastname: Filipas
authors.forename: M
authors.initials: M
authors.lastname: Fisch
authors.forename: H
authors.initials: H
authors.lastname: Abol Enein
authors.forename: J
authors.initials: J
authors.lastname: Fichtner
authors.forename: A
authors.initials: A
authors.lastname: Bockisch
authors.forename: R
authors.initials: R
authors.lastname: Hohenfellner
mesh_terms: D000042:Absorption; D000136:Acid-Base Equilibrium; D000138:Acidosis / Q000378:metabolism; D000293:Adolescent; D000328:Adult; D000368:Aged; D002712:Chlorides / Q000097:blood / Q000378:metabolism*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D016476:Urinary Reservoirs, Continent
chemical_list: D002712:Chlorides