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Published on: February 28, 2012
Prevention of atrial fibrillation after cardiac surgery
1Department of Anesthesiology, University of North Carolina at Chapel Hill, West Wing UNC Hospitals, Chapel Hill, North Carolina 27599-7010, USA. apassannante@aims.unc.edu
Insights
Postoperative atrial fibrillation is common after cardiac surgery. A multimodal prevention strategy, including medications like beta-blockers and statins, may improve outcomes.
Area of Science:
- Cardiology
- Cardiac Surgery
- Electrophysiology
Background:
- Atrial fibrillation (AF) is a frequent complication following cardiac surgery.
- Postoperative AF increases patient mortality and complicates recovery.
Purpose of the Study:
- To review current clinical and laboratory research on preventing atrial fibrillation after cardiac surgery.
- To identify effective strategies for reducing the incidence of postoperative AF.
Main Methods:
- Review of recent clinical and laboratory investigations.
- Analysis of risk factors and preventive pharmacological agents.
- Evaluation of current guidelines and emerging treatments.
Main Results:
- Postoperative atrial fibrillation incidence remains high, affecting up to 60% of patients.
- Risk factors include age, prior AF history, valvular surgery, and left atrial pathology.
- Pharmacological agents such as beta-blockers, amiodarone, statins, steroids, magnesium, and sotalol show preventive efficacy.
- Vernakalant is effective for converting AF to sinus rhythm post-surgery.
Conclusions:
- Atrial fibrillation after cardiac surgery has significant clinical implications.
- A comprehensive, multimodal preventive approach is recommended.
- This includes preoperative beta-blockers and statins, perioperative magnesium and steroids, and amiodarone for high-risk individuals.
Purpose Of Review:
Atrial fibrillation after cardiac surgery remains a very common and vexing clinical problem. This review summarizes recent clinical and laboratory investigations, the results of which may lead to a more effective strategy for the prevention of atrial fibrillation after cardiac surgery.
Recent Findings:
The incidence of atrial fibrillation after cardiac surgery remains high (60% in some series), and there is no single strategy that reliably prevents it. Age, prior history, valvular surgery, and left atrial pathology and dysfunction are associated with the development of postoperative atrial fibrillation. Mortality in patients who develop new-onset atrial fibrillation after cardiac surgery is increased. Drug treatment with beta-blockers, amiodarone, statins, steroids, magnesium, and sotalol can be effective in preventing postoperative atrial fibrillation. Current guidelines for the prevention of postoperative atrial fibrillation are underutilized, which offers an opportunity for improvement. A new drug, vernakalant, has proved effective and well tolerated for chemical conversion of atrial fibrillation after cardiac surgery to sinus rhythm.
Summary:
Atrial fibrillation after cardiac surgery remains a dysrhythmia with significant implications. A more comprehensive, multimodal preventive strategy, using preoperative beta-blockers and statins, perioperative magnesium and steroids, and preoperative amiodarone in high-risk patients should be rigorously evaluated.
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