What kind of energy devices should be used for laparoscopic liver resection? Recommendations from a systematic review.

Transection methods and hemostasis achievement have an impact on blood loss, and consequently on outcome and survival. However, no consensus exists on parenchymal transection or hemostasis techniques in laparoscopic liver resection (LLR). The aim of this review is to clarify the role of energy devices (ED) in LLR. ED is a generator of mechanic or electric energy transfer to an operating tool, used for transection, sealing or both. Searches were performed in PubMed, PubMed Central, Cochrane, Embase, Google Scholar in human or animal experimental models. Each study quality was graded following the GRADE system. From 1996 to 2014, 30 studies were found: five comparative, one prospective, two case-control, and 16 case series and some case reports, with level of evidence ranging from Moderate to Very Low. Since 2012, the Research and Development of new tools raised quicker than clinical studies could follow. The two main techniques emerged are blind transection versus sharp dissection: due to the low quality and heterogeneity of the studies, no firm conclusion can be drawn, but meticulous dissection of vessels usually never leads to vascular damage. As a matter of fact, ED, though efficient and reliable, cannot replace the basic skills of hepatic surgery: sharp dissection, vascular control and elective sealing.