METHODS: Patients with hepatocellular carcinoma who attended our hospital from January 2021 to April 2023 were divided into CS group and N group according to the random number table method; CS group underwent ultrasound-guided continuous low anterior serratus plane block and N group underwent ultrasound-guided single anterior serratus plane block combined with rectus abdominis sheath block; the operation time, anesthesia time, incision length, sensory block time and sensory block maintenance time were counted and recorded. Pain score (NRS) was used to detect analgesia; alanine aminotransferase (ALT), liver function aspartate aminotransferase (AST), and prothrombin time (The time of thrombin, NRS) were measured by fluorescent quantitative PCR. （The time of thrombin (APTT), total bilirubin (TBIL) levels and adverse reactions.
To investigate the clinical application of ultrasound-guided continuous low serratus anterior plane block in open surgery for hepatocellular carcinoma.