Micturition After Gastrocystoplasty and Gastric Bladder Replacement

Abstract

Stomach seems to be an ideal source of material for bladder augmentation or replacement. The high capacity, low pressure reservoir provided by gastric tissue is probably due to the nature of the involuntary contractions, which occur only late in filling with a low amplitude. Also, the gastric neobladder is evacuated mainly by contraction of its musculature, supplemented with abdominal straining at the end of voiding.

Laparoscopic radical cystectomy with orthotopic gastric neobladder: technique and initial outcomes

“…The involuntary contractions were noted only when Wlling of the bladder reached 65-90% of ultimate capacity. An interrupted biphase urinary Xow pattern was observed as Koraitim et al (1999). The urine Xow was controlled by contraction of the gastric neobladder wall at the Wrst stage and followed the second stage controlled mainly by the abdominal pressure.…”

“…Orthotopic neobaldder with bowel or stomach are becoming increasing popular and technically feasible (Koraitim et al 1999). Open orthotopic gastric neobladder has got excellent results (Lin et al 2000).…”

“…Koraitim et al (1999) determine the function of gastric tissue as a reservoir for urine and driving force for urination. A total of 12 men underwent gastrocystoplasty (8) or gastric bladder replacement (4).…”

“…No patient reported preoperative incontinence. Urodynamic studies were performed in 6 months post-operatively as described by Koraitim et al (1999).…”

“…After 20 years, Leong (1978) conducted an exciting exploration using stomach for bladder replacement and urinary division. Since that time, open augmentation gastrocystoplasty and gastric neobladder have been shown to be an eVective means of treating chronically contracted bladder diseases and bladder cancer (Leonard et al 2000;DeFoor et al 2003;Koraitim et al 1999). We have used stomach for bladder replacement and urinary division for more than 20 years (Hu.…”