Atrial fibrillation in cardiac surgery

Area of Science:

• Cardiology
• Cardiac Surgery
• Electrophysiology

Background:

• Atrial fibrillation is the most common arrhythmia post-cardiac surgery.
• It significantly increases risks of heart failure, renal issues, embolism, prolonged hospitalization, and mortality.
• Atrial fibrillation in the postoperative period of cardiac surgery (FAPCC) typically emerges within 48 hours.

Purpose of the Study:

• To review the mechanisms, risk factors, prediction, and management of FAPCC.
• To highlight the importance of FAPCC prevention and follow-up.
• To underscore that FAPCC is not a benign complication.

Main Methods:

• Literature review on FAPCC mechanisms, risk factors, and treatment.
• Analysis of associated risk factors including age, COPD, CKD, valve surgery, LVEF < 40%, and beta-blocker withdrawal.
• Evaluation of prophylactic treatments (beta-blockers, amiodarone) and acute management strategies.

Main Results:

• Increased sympathetic tone and inflammatory response are key mechanisms.
• Predictive instruments for FAPCC exist.
• Prophylactic beta-blockers and amiodarone reduce FAPCC incidence.
• Initial management focuses on heart rate control; cardioversion is reserved for refractory cases.

Conclusions:

• FAPCC is a significant complication requiring proactive risk factor identification and prevention.
• Long-term follow-up and management strategies beyond the immediate postoperative period need further investigation.
• Integrated care units should incorporate FAPCC prevention and outpatient follow-up.