Preoperative evaluation and decision of complicated hepatectomy        LIANG Li-jian. Department of Hepatobiliary Surgery, the First Hospital of SUN Yat-sen University, Guangzhou 510080, China
Abstract    Both surgical indications and contraindications should be strictly held in complicated hepatectomy. Accurate evaluation of patient’s general condition, surgical risks and liver function compensation should be carried out before surgery. Aside from conventional liver function tests, commonly used techniques include Child-Turcotte-Pugh (CTP) score, model for end-stage liver disease (MELD), indocyanine green retention rate at 15 minutes (ICG R15) and oral glucose tolerance test (OGTT), with ICG R15 as the most accurate and practical in Asian areas. In addition, development of 3D imaging techniques and volume measurement software make it possible to predict future remnant liver volume（FRLV）. If ICG R15 is less than 10 minutes in cirrhotic patient, FRLV larger than 50％ should be safe. As for techniques used for blood control in hepatectomy, clamp crushing remains the most commonly used method despite the occurrence of many new types of equipment. Recently used four-prong radiofrequency transection device (Habib 4×) might further reduce blood loss in hepatectomy.