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Laparoscopic pyeloplasty in the animal model
E M McDougall1, O M Elashry, R V Clayman
1Division of Urologic Surgery, Washington University School of Medicine, St. Louis, Missouri, USA.
Summary
Two laparoscopic pyeloplasty techniques, using Lapra-Ty clips or Endostitch devices, showed similar success rates for ureteropelvic junction (UPJ) obstruction repair. Both methods achieved comparable operative times and outcomes in this study.
Area of Science:
- Minimally invasive surgery
- Urology
- Surgical techniques
Background:
- Laparoscopic pyeloplasty is a surgical procedure to repair ureteropelvic junction (UPJ) obstruction.
- Concerns exist regarding prolonged operative times associated with laparoscopic pyeloplasty.
Purpose of the Study:
- To evaluate the feasibility of two distinct laparoscopic techniques for secondary UPJ obstruction repair.
- To compare the efficacy of intracorporeal suturing with Lapra-Ty clips versus the Endostitch device.
Main Methods:
- Sixteen female Yucatan minipigs underwent induced unilateral UPJ obstruction.
- Laparoscopic pyeloplasty was performed using either intracorporeal suturing with Lapra-Ty clips or the Endostitch device.
- Animals were monitored for six months with renal scans, serum creatinine, and histopathology.
Main Results:
- All laparoscopic pyeloplasties were completed successfully.
- No significant difference was observed between the two techniques in operative time (mean 40 minutes), ureteral caliber, serum creatinine, or healing scores.
- The animal model experienced a significant decrease in renal function due to the severity of the induced obstruction.
Conclusions:
- Laparoscopic pyeloplasty can be performed with comparable success using either the Endostitch device or intracorporeal suturing with Lapra-Ty clips.
- Both techniques yield equivalent results for pyeloplasty repair in this model.