The Effect of Preoperative SGB on POAF After VATS

The aim of this study is to test if stellate ganglion block can decrease the incidence of atrial fibrillation after video-assisted thoracoscopic surgery and the way it works.

Inclusion Criteria:1.patients undergoing elective thoracoscopic lobectomy; 2.patients with one or more risk factors of POAF. According to literature, risks factors of POAF including male, aged over 65, obesity (BMI>30kg/m2), cardiac co-morbidity ( hypertension, myocardial infarction, heart failure, arrhythmia, history of valve procedure), diabetes, chronic renal insufficiency (increased creatinine level), obstructive sleep apnea syndrome (diagnosed or STOP-BANG scores ≥3).Exclusion Criteria:1. patients with permanent atrial fibrillation, left ventricular or right ventricular pacemaker implantation or removal; 2. patients use antiarrhythmic drugs (except beta-blockers); 3.patients use immunosuppressive drugs preoperatively; 4.patients with active infection or sepsis; 5. patients with neurologic disorder; 6.patients with immune deficiency syndrome.