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Percutaneous endopyeloplasty: a novel technique
Mihir M Desai1, Inderbir S Gill, Eduardo F Carvalhal
1Section of Laparoscopic and Minimally Invasive Surgery, Urological Institute, The Cleveland Clinic Foundation, 9500 Euclid Avenue, Cleveland, OH 44195, USA.
Journal of Endourology
|October 25, 2002
Summary
Percutaneous endopyeloplasty offers a novel, effective solution for ureteropelvic junction obstruction, achieving wider repair and better outcomes than traditional endopyelotomy. This minimally invasive technique demonstrates feasibility and reproducibility in porcine models.
Area of Science:
- Urology
- Minimally Invasive Surgery
- Surgical Innovation
Background:
- Ureteropelvic junction (UPJ) obstruction affects a significant patient population, with endopyelotomy carrying a 10-15% failure rate.
- Conventional treatments for UPJ obstruction often have limitations and associated failure rates.
Purpose of the Study:
- To introduce and evaluate a novel percutaneous endopyeloplasty technique.
- To assess the feasibility, efficacy, and outcomes of percutaneous endopyeloplasty in a chronic porcine UPJ obstruction model.
- To compare percutaneous endopyeloplasty with conventional endopyelotomy and laparoscopic pyeloplasty.
Main Methods:
- A chronic bilateral UPJ obstruction model was created in pigs.
- Percutaneous endopyeloplasty involved standard incision, horizontal suturing via nephroscope, and drainage.
- Procedures were compared: percutaneous endopyeloplasty (N=10), conventional endopyelotomy (N=5), and laparoscopic pyeloplasty (N=5).
Main Results:
- Percutaneous endopyeloplasty was technically successful in all cases with a mean operative time of 81.4 minutes.
- Post-procedure, all renal units showed relief of obstruction, improved renogram parameters, and low intrapelvic pressure.
- UPJ caliber was significantly greater after endopyeloplasty (13.8F) compared to endopyelotomy (7.5F), with less intraoperative extravasation.
Conclusions:
- Percutaneous endopyeloplasty is a feasible, simple, reproducible, and effective treatment for UPJ obstruction.
- Advantages include a wider UPJ caliber, absence of extravasation, and shorter stenting duration compared to conventional endopyelotomy.
- This technique represents a significant advancement in minimally invasive UPJ obstruction management.