Clinical characteristics between two groups were compared including the following risk factors: gender, age, body mass index (BMI), Abdominal surgery history, preoperative abdominal pain, preoperative diabetes and hypertension, American Association of Anaesthesiologists (ASA) score, and Child-Pugh score as well as measurements of white blood cells (WBC), neutrophils, haemoglobin, albumin, total bilirubin (TB), direct bilirubin (DB), alanine aminotransferase (ALT), and aspartate aminotransferase (AST). Here, ALB is linked to Hypertension.