THE KOCK POUCH URINARY RESERVOIR - 11/09/11
Résumé |
Following Bricker's7 description in 1950, the ileal conduit or loop rapidly displaced the ureterosigmoidostomy as the standard urinary diversion. The ease of construction, the mobility and reliable vascular arcades of the small bowel mesentery, relative paucity of early complications with the use of silicone stents, and fewer electrolyte disturbances are major advantages. Concerns with late upper tract damage from reflux and urinary infections, however, and stomal complications led to interest in nonrefluxing diversions with colon and ileocolonic segments, and eventually continent reservoirs. One of the earliest continent ileal reservoirs was advanced by Camey,7 whose procedure utilized a intact U-shaped segment of small bowel anastomosed to the membranous urethra at the apex. Camey's procedure, however, was troubled by nocturnal incontinence from the tubularized bowel contractions. The introduction of detubularization by using reconfigured bowel dramatically lowered intraluminal filling pressures and improved continence.20, 23, 24
The Kock pouch, initially devised for continent ileostomy, was popularized in the early 1980s as a urinary reservoir by Skinner, who added several revisions to minimize complications associated with the antirefluxing, continent intussuscepted nipples.23, 34, 35, 36, 37 The detubularized ileal reservoirs have lower-pressure contractions than detubularized large bowel reservoirs.6 Orthotopic placement of the neobladder to the urethral stump is preferable to a catheterizable cutaneous stoma. Neobladders were initially utilized in patients with no evidence of malignancy beyond the bladder neck, but recent experience with neobladders shows a decreased urethral recurrence rate in neobladder patients with prostatic urethral or stromal involvement compared with patients with a cutaneous stoma and defunctionalized urethra. Although this has been mostly limited to men, several recent studies have reported successful orthotopic neobladders in women by carefully preserving the external sphincter in the mid and distal urethra.40, 41
Le texte complet de cet article est disponible en PDF.Plan
| Address reprint requests to Peter T. Nieh, MD Department of Urology Lahey Hitchcock Medical Center 41 Mall Road Burlington, MA 01805 |
Vol 24 - N° 4
P. 755-772 - novembre 1997 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
L’accès au texte intégral de cet article nécessite un abonnement.
Déjà abonné à cette revue ?
