[Cystoplasty using a resorbable polyglactin prosthesis covered by a free peritoneal flap].

Area of Science:

• Urology
• Biomaterials Science
• Surgical Innovation

Context:

• Bowel segments are not always ideal for bladder reconstruction (cystoplasty).
• Investigating alternative biomaterials for partial bladder replacement is crucial for improving patient outcomes.
• Developing robust and biocompatible materials is essential for urological reconstructive surgery.

Purpose:

• To evaluate the efficacy of a vicryl mesh lined with a peritoneal flap for partial bladder replacement in a rat model.
• To compare the outcomes of using a free peritoneal flap versus a vicryl mesh-peritoneal flap combination for cystoplasty.
• To assess the biocompatibility, structural integrity, and potential complications of the vicryl mesh prosthesis.

Summary:

• A partial cystectomy followed by cystoplasty was performed on 20 rats, comparing free peritoneal flaps (Group 1) with vicryl mesh and peritoneal flaps (Group 2).
• Evaluations included intravenous pyelography, macroscopic, and histological analyses at one month.
• Group 1 had one fistula; Group 2 had no fistulas but three cases of stone formation. Histology showed good urothelial reconstruction in both groups, with partial vicryl resorption and neo-muscular fiber organization.

Impact:

• The vicryl mesh, when covered by a peritoneal flap, demonstrated potential as a strong, watertight material for bladder augmentation.
• This study highlights the need to consider the risk of stone formation associated with vicryl mesh, especially in the context of urinary tract infections.
• Findings contribute to the development of novel biomaterials for urological reconstruction, potentially offering alternatives to bowel grafts.