The Effect of Continuous Intravenous Infusion of Lidocaine on PPCs and Prognosis in Emergency Surgical Patients With IAI

Inclusion Criteria: * Age \>18 years, any gender. * Patients suspected of digestive tract perforation or obstruction based on physical examination, confirmed by imaging, requiring emergency surgical treatment. * The anesthesia method is general anesthesia * I or the patient's family have carefully read and signed the informed consent form * Serum procalcitonin (PCT) at inflammatory levels or leukocytosis (\>12×109/L) or leukopenia (\<4×109/L) or \>10% naive leukocytes Exclusion Criteria: * Have a history of local anesthesia drug allergy * Pregnant patients * Patients receiving renal replacement therapy * Patients with arrhythmias or heart failure (second or third-degree atrioventricular block or left ventricular ejection fraction（LVEF） * Preoperative platelet count\<80 × 109/L * Patients who require secondary surgery for postoperative anastomotic fistula * Patients who have participated in other clinical studies