[The New Liver Retraction Method "V-Shape+1 Method" Using Penrose Drains for Laparoscopic Surgery of the Stomach].

Liver retraction is a necessary operative procedure for enabling greater visualization and a wider surgical field during laparoscopic surgery of the stomach. We have developed a new liver retraction method for laparoscopic surgery that uses penrose drains, is very easy to perform and in minimally invasive. We call this method the "V-Shape+1 method". We performed laparoscopic surgery using this method on 16 patients within 8.3(5.3-13.7)min(median). We analyzed the postoperative changes in the serum levels of AST, ALT, and T-Bil, which are indicators of liver function. The serum AST, ALT values were elevated at postoperative day 1. Thereafter, the values improved immediately. This early liver function failure is acceptable. We have not experienced any complication related to this method. Therefore, we believe this method is useful for obtaining wide visualization easily for not only laparoscopic gastrectomy but also for laparoscopic upper abdominal surgery.