[Kamiyama-Style STA-MCA Bypass Surgery].

The primary objective of bypass surgery is the long-term patency of bypass vessels, but shortening occlusion time during anastomosis is also required to avoid ischemic complications. Bypass surgery is associated with variations in the procedure depending on a surgeon's preference. However, regardless of technical variations, success of bypass surgery depends on some universal aspects. Surgical field preparation before anastomosis and implementation of adequate steps for confirmation of the procedure are important determinants of a successful bypass surgery.