Orthotopic ileal bladder: clinical, urodynamic and metabolic evaluation

Area of Science:

• Urology
• Surgical Innovation
• Reconstructive Surgery

Background:

• Radical cystectomy necessitates bladder reconstruction.
• Orthotopic ileal bladder substitution is a common technique.
• Comparing different ileal bladder substitution methods is crucial for optimizing patient outcomes.

Purpose of the Study:

• To compare the clinical, metabolic, and urodynamic outcomes of two orthotopic ileal bladder substitution techniques: Camey I and Studer procedures.
• To evaluate the efficacy of detubularization of the terminal ileum in creating a low-pressure reservoir.

Main Methods:

• A comparative study involving 64 male patients undergoing radical cystectomy and orthotopic ileal bladder substitution.
• Patients were divided into two groups: Camey I (35 patients) and Studer (29 patients).
• Regular clinical, metabolic, and urodynamic evaluations were performed with mean follow-up periods of 27 months (Camey I) and 13.6 months (Studer).

Main Results:

• The Studer procedure group demonstrated significantly better outcomes, including larger bladder capacity and lower intraluminal pressure, compared to the Camey I group.
• Patients with Camey I reconstruction experienced shorter voiding intervals and a higher incidence of enuresis and ureteral reflux.
• Both groups exhibited mild metabolic acidosis, managed effectively with oral alkalinization.

Conclusions:

• Detubularization of the terminal ileum, as utilized in the Studer procedure, creates a more favorable low-pressure reservoir for orthotopic bladder substitution.
• The Studer procedure is associated with improved functional outcomes and reduced complications compared to the Camey I technique.
• These findings support the Studer procedure as a preferred method for orthotopic ileal bladder substitution.