Clinical Analysis Of Risk Factors For Postoperative Atrial Fibrillation After Coronary Artery Bypass Graft Surgery

Objective : Atrial fibrillation(AF) after coronary artery bypass graft(CABG) surgery is a rare complication. This rapid arrhythmia may result in increased risk of embolism and other complications in patients significantly,and extend the length of hospital stay. In the research of the risk factors of AF after CABG surgery in our country and abroad, the influence of patients’ age,operation time and the extracorporeal circulation on postoperative AF has still not been clearly concluded. By comparing the CABG surgery patients of the cardiac surgery in Jining medical university affiliated hospital these two years,this article tells us whether age, extracorporeal circulation or other cardiac surgery is a risk factor for postoperative atrial fibrillation.Methods:Data collection: 498 patients with coronary artery bypass graft surgery of Jining medical university affiliated hospital between January 2014 and January 2016.Statistical postoperative 3 days whether AF lasts for more than 10 min, thus divided into AF group and non AF group, analysis of the two groups of patients with clinical data. Patients with surgical approach are sternum midline incision. Except 18 cases of preoperative patients with AF and1 case of postoperative deaths due to heart, the remaining 479 cases were retrospectively analyzed. Of these cases,321 males and 158 cases of women,aged 39-80, an average of 65.3 years old. Pure surgery under extracorporeal circulation in 361 cases, Pure non surgery under extracorporeal circulation in80 cases, merging other cardiac surgery, 38 cases(all) for surgery under extracorporeal circulation. Clinical data collection category mainly includes gender, age, whether extracorporeal circulation, extracorporeal circulation time,postoperative hospital stay, postoperative AF cases. Application of the above data SPSS19.0 software for statistical analysis, there are significant differences of standard is: P < 0.05.Results : After pure CABG surgery, the incidence of AF was 2.71%,combined incidence of AF after cardiac surgery was 2.63%, there was no statistically significant difference. Acuity, the pure CABG postoperative incidence of AF of more than 65 years old patients was 3.72%, pure CABG postoperative AF incidence of less than 65 years old patients was 1.98%, the difference compared with no statistical significance(P > 0.05). Pure CABG surgery patients, intraoperative use of extracorporeal circulation in 361 patients,12 cases occurred postoperative AF. With 80 cases of extracorporeal circulation, 0 cases of postoperative AF. Difference compared with no statistical significance(P > 0.05). Pure CABG patients with extracorporeal circulation time p 120 min has 21 cases, including 3 cases of postoperative AF.Extracorporeal circulation time < 120 min there are 340 cases, including 9cases of postoperative AF. Both compared difference(P < 0.05) was statistically significant.Conclusion : Cannot explain other cardiac surgery, at the age of 65 or higher, whether extracorporeal circulation is a risk factor for AF occurred afterCABG surgery. The length of extracorporeal circulation time affect the increased risk of AF after cardiac surgery.