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Updated: Jul 6, 2026
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Application of the En Bloc Concept Combined with Anatomic Resection in Laparoscopic Hepatectomy
Published on: March 10, 2023
Water-jet dissection for parenchymal division during hepatectomy
Charles M Vollmer1, Elijah Dixon, Ajay Sahajpal
1University of Toronto, Toronto, Ontario, Canada. cvollmer@bidmc.harvard.edu
Summary
High-pressure water-jet dissection offers precise, controlled hepatic resection, significantly minimizing blood loss and transfusion needs. This advanced technique proves safe and effective, comparing favorably to traditional methods.
Area of Science:
- Surgical Technology
- Hepatobiliary Surgery
- Minimally Invasive Techniques
Background:
- High-pressure water-jet dissection, originally industrial, is adapted for medical use.
- Its application in hepatic resections is not well-understood.
- Potential benefits include precise dissection, limited blood loss, and minimal trauma.
Purpose of the Study:
- To evaluate the efficacy and safety of water-jet dissection in hepatic resections.
- To assess perioperative outcomes associated with this technique.
Main Methods:
- A consecutive case series of 101 hepatic resections was analyzed.
- Included were standard hepatectomies and living donor transplantation resections.
- Perioperative outcomes such as blood loss, transfusion needs, complications, and length of stay were recorded.
Main Results:
- Median estimated blood loss (EBL) was 900 ml, with only 14% exceeding 2000 ml.
- 14% of patients required packed red blood cell (PRBC) transfusions (average 0.59 units/case).
- Median length of stay (LOS) was 7 days; outcomes were comparable or superior to ultrasonic dissection.
Conclusions:
- Water-jet dissection effectively minimizes blood loss, transfusion requirements, and complications in hepatic surgery.
- This precision tool demonstrates safety and efficacy for hepatic division.
- It presents a favorable alternative to established hepatic parenchymal transection methods.
