Effect of Ultrasound-guided Left Stellate Ganglion Block on Rapid Recovery of Patients Undergoing Cardiac Valve Replacement and Its Mechanism

In this study, Valve replacement patients undergoing cardiopulmonary bypass were randomly divided into control group and experimental group (SGB Group) , main outcome measures: postoperative complications (pulmonary infection, oxygenation injury, arrhythmia, hemorrhage, enteroparalysis, incision infection, renal insufficiency, cognitive impairment, etc.) and 30-day mortality. Secondary outcome measures: Hemodynamics, postoperative extubation time, length of stay and total cost of hospitalization. To investigate the effect of SGB on the rapid recovery of patients with Valve replacement heart disease after cardiopulmonary bypass.

Inclusion Criteria: \- Sixty patients with cardiac Valve replacement undergoing elective cardiopulmonary bypass, with cardiac function class II-IV and ASAII-IV, aged 18-70 years. Exclusion Criteria: \- Patients with off-pump cardiac Valve replacement, age \> 18 years or \> 70 years, cardiac function ≥ III, ASA grade ≥ III, local anesthetic allergy, concomitant immune disease or immunosuppressive status, patients with severe mental disorders who could not cooperate with SGB, abnormal neck anatomy, and failure of stellate ganglion block refused to participate in the study.