Postoperative atrial fibrillation after thoracic aortic surgery.

Area of Science:

• Cardiovascular Surgery
• Cardiac Arrhythmias
• Thoracic Aortic Surgery

Background:

• Postoperative atrial fibrillation (POAF) is a common complication after cardiac surgery, significantly increasing morbidity and mortality.
• Identifying risk factors for POAF is crucial for developing targeted preventive strategies.

Purpose of the Study:

• To identify major risk factors for postoperative atrial fibrillation (POAF) following thoracic aortic surgery.
• To establish a foundation for a risk stratification system to predict POAF incidence.

Main Methods:

• Analysis of 12,260 patient records from the Japan Adult Cardiovascular Surgery Database (2004-2008).
• Exclusion of patients with a prior history of atrial fibrillation (AF).
• Statistical assessment using Fisher exact test, Student t test, and multiple logistic regression to evaluate 22 risk factors.

Main Results:

• The incidence of POAF was 17.1% in the study population.
• Significant risk factors for POAF included advanced age, smoking history, hypertension, congestive heart failure, urgent operations, and concomitant coronary artery bypass grafting.
• POAF was associated with significantly increased postoperative mortality and stroke (p < 0.0001).

Conclusions:

• Multiple preoperative and operative factors contribute to the development of POAF after thoracic aortic surgery.
• POAF significantly elevates the risk of 30-day operative mortality.
• The identified risk factors can inform the development of a predictive risk stratification system for POAF.