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Laparoscopic partial nephrectomy with a diode laser: porcine results
Kenneth Ogan1, David Wilhelm, Guy Lindberg
1The Clinical Center for Minimally Invasive Urologic Cancer Treatment, The University of Texas Southwestern Medical Center, Dallas 75390, USA.
Journal of Endourology
|January 25, 2003
Summary
This study shows a 980-nm diode laser can perform laparoscopic partial nephrectomy without hilar occlusion in pigs. While feasible, some cases required additional hemostasis for bleeding control.
Area of Science:
- Urology
- Minimally Invasive Surgery
- Laser Technology
Background:
- Partial nephrectomy is a standard treatment for small renal masses.
- Hilar occlusion is typically used to minimize blood loss during partial nephrectomy.
- Developing techniques to avoid hilar occlusion can potentially preserve renal function.
Purpose of the Study:
- To evaluate the feasibility and safety of laparoscopic partial nephrectomy without hilar occlusion.
- To assess the efficacy of a 980-nm diode laser for this procedure.
Main Methods:
- Laparoscopic transperitoneal lower-pole partial nephrectomy was performed in a porcine model (n=5).
- A 980-nm diode laser was used for renal parenchyma dissection and hemostasis without hilar occlusion.
- Renal function was monitored postoperatively, and kidneys were analyzed ex-vivo.
Main Results:
- Successful lower-pole partial nephrectomy without hilar occlusion was achieved in all 10 kidneys.
- Average operative time was 126 minutes, with 84 minutes of laser use.
- Mean blood loss was 150 mL, and no urinary extravasation was observed.
Conclusions:
- Laparoscopic partial nephrectomy using a 980-nm diode laser without hilar occlusion is feasible in a porcine model.
- Adjunctive hemostatic measures may be needed in some cases.
- Further clinical trials should focus on small exophytic tumors.