1 INTRODUCTION. pLT has become clinical routine with a 20-year patient survival of up to 79%. 1 HAR is the most demanding part of the pLT due to the narrow diameter of the corresponding hepatic arteries, especially when segment 2/3 grafts from living donors (LDLT) or split grafts from deceased donors (DDLT) are used. HAT is the most frequent surgical complication after pLT, occurring in up to ....