Application of Perioperative Remote Ischemic Conditioning in Patients Undergoing Hepatectomy

Inclusion Criteria: * Patients undergoing hepatectomy under general anesthesia * American Society of Anesthesiology (ASA) grade of II \~ III * Male and female patients, age 25 to 75 years * New York Heart Association (NYHA) grade of I \~ III Exclusion Criteria: * Patients with limb deformity or peripheral vascular disease affecting upper limb function * Patients with a medical history of nervous system, immune system and mental illness * Patients who have received hepatectomy in the past, have important organ diseases or have undergone surgical treatment recently * Patients who have recently used anti-inflammatory analgesics, anticoagulants, hormone drugs, immunosuppressants, and ATP-sensitive K-channel blockers (KATP) * Preoperative severe renal insufficiency (serum creatinine \> 442 umol/L, with or without serum potassium \> 6.5 mmol/L, or the clinician-recognized need for renal replacement therapy), liver insufficiency (Child-Pugh grade C) * Patients and/or their family members refuse to participate in the program