Comparison of a Novel One-Step Percutaneous Nephrolithotomy Sheath with a Standard Two-Step Device - 23/08/11
Reprint requests: D. Duane Baldwin, M.D., Division of Urology, Loma Linda University School of Medicine, 11234 Anderson Street, Room A560, Loma Linda, CA 92354.Résumé |
Objectives |
Percutaneous nephrolithotomy (PCNL) is the treatment of choice for large renal calculi. The most widely used access sheath for PCNL involves two steps including placement of a high-pressure balloon catheter (HPBC) followed by advancement of a sheath over the balloon. A novel PCNL balloon/sheath combination (NSS) has been developed that allows for both dilation and sheath placement in a single step. The objective of this study was to compare the safety and efficacy of the NSS to the HPBC in a porcine model.
Methods |
Six farm pigs underwent placement of a standard HPBC in one kidney and the NSS on the contralateral side. We obtained access in the upper pole in 2 animals, middle pole in 2 animals, and lower pole in 2 animals. We obtained data on insertion time, difficulty of insertion, estimated blood loss (EBL), ability to visualize the collecting system, and gross and histopathologic analysis.
Results |
There was no statistical difference in degree of difficulty in placing the NSS (3 easy, 3 moderate) versus HPBC device (1 easy, 5 moderate; P = 0.07), estimated blood loss (P = 0.10), or the ability to visualize the collecting system (P = 0.32). There was a significantly shorter insertion time in the NSS group compared with the HPBC group (1:37 versus 2:26 minutes, P = 0.04).
Conclusion |
This study demonstrates that the NSS is safe and effective in the porcine model. Trials in patients are currently under way.
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| This study was funded by Onset Medical. D. D. Baldwin is a member of the scientific advisory board for Onset Medical. |
Vol 71 - N° 2
P. 223-227 - février 2008 Retour au numéro
Article précédent
- Confident Intraoperative Decision Making During Percutaneous Nephrolithotomy: Does This Patient Need a Second Look?
- Andrew J. Portis, Mark A. Laliberte, Cindy Holtz, Wenjun Ma, Michael S. Rosenberg, Carl A. Bretzke
- Nutcracker Phenomenon Demonstrated by Multidetector Computed Tomography with Three-Dimensional Imaging
- Satomi Kawamoto, Karen M. Horton, Elliot K. Fishman
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