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Nonischemic laparoscopic partial nephrectomy using a novel wet monopolar device in a porcine model
Adam C Mues1, Joseph A Graversen, Ruslan Korets
1Department of Urology, Columbia University Medical Center, New York, New York, USA.
Journal of Endourology
|October 21, 2011
Summary
The saline enhanced electrosurgical resection (SEER) device effectively resects kidney tissue during laparoscopic partial nephrectomy (LPN) in pigs, showing low blood loss and operative times. Deeper tissue necrosis was observed with longer application times, especially during hilar clamping.
Area of Science:
- Urology
- Minimally Invasive Surgery
- Surgical Technology
Background:
- Laparoscopic partial nephrectomy (LPN) is standard for cT1a renal masses.
- Evaluating a novel saline enhanced electrosurgical resection (SEER) device for nonischemic LPN.
Purpose of the Study:
- Assess SEER device performance in a porcine model for nonischemic LPN.
- Characterize energy penetration and tissue necrosis depth.
Main Methods:
- Six pigs underwent nonischemic LPN using the SEER device.
- Energy penetration tested at 30s, 1min, 3min with and without hilar clamping.
- Resection time, estimated blood loss (EBL), and necrosis depth recorded.
Main Results:
- Average operative time was 15.4 minutes with mean EBL of 44.2 mL.
- Necrosis depth averaged 2.97 mm; significantly deeper in clamped kidneys (8.68 mm at 3 min).
- SEER device transected parenchyma and collecting system effectively.
Conclusions:
- SEER device enables low-time, low-blood-loss nonischemic LPN in a porcine model.
- Coagulation during resection is an advantage over cold scissors.
- Hilar clamping and longer SEER application increase necrosis depth.
