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Updated: Jun 24, 2026
The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Recent developments in pharmacologic prophylaxis of atrial fibrillation in patients undergoing surgical
1Cardiologia Generale 1, AOU Careggi, Firenze, Italia. c.rostagno@katamail.com
Insights
Postoperative atrial fibrillation (POAF) is a common complication after coronary artery bypass grafting (CABG). Preventing POAF may reduce adverse events and hospital stays.
Area of Science:
- Cardiology
- Cardiac Surgery
- Pharmacology
Background:
- Atrial fibrillation (AF) is a frequent complication after coronary artery bypass grafting (CABG), occurring in 20-50% of patients.
- Postoperative AF (POAF) is linked to increased adverse events, prolonged hospital stays, and higher healthcare costs.
- Potential etiological factors include neurohormonal activation, electrolyte imbalance, fluid overload, surgical practices, and exaggerated inflammatory responses.
Purpose of the Study:
- To review the incidence, risk factors, and prevention strategies for postoperative atrial fibrillation (POAF) following CABG.
- To explore pharmacological interventions, including antiarrhythmic drugs, PUFA, hydrocortisone, and statins, for POAF prevention.
- To assess the potential benefits of combining prophylactic regimens for POAF risk reduction.
Main Methods:
- Literature review of studies investigating POAF after CABG.
- Analysis of risk factors, including advanced age, history of AF or heart failure, COPD, and beta-blocker withdrawal.
- Evaluation of prophylactic pharmacological strategies such as antiarrhythmic drugs, PUFA, hydrocortisone, and statins.
Main Results:
- POAF incidence is not influenced by CABG technique (with or without cardiopulmonary bypass).
- Independent risk factors for POAF include advanced age, prior AF or heart failure, COPD, and beta-blocker withdrawal.
- Postoperative administration of beta-blockers, ACE inhibitors, potassium, and NSAIDs is associated with reduced POAF risk. PUFA, hydrocortisone, and statins have also shown promise in prevention.
Conclusions:
- POAF is a significant complication of CABG with multifactorial causes.
- Various pharmacological strategies, including antiarrhythmic drugs, PUFA, hydrocortisone, and statins, show potential for POAF prevention.
- Combining prophylactic regimens may offer enhanced risk reduction for POAF in CABG patients.
Abstract:
Atrial fibrillation is a frequent complication after CABG. It occurs in 20-50% of patients, most often between the 2nd and 3rd postoperative day. About 40 % of patients experience more than 1 episode. Postoperative AF (POAF) is associated with an increase in adverse events and hospital stay and, therefore, costs of care. The incidence of POAF is not influenced by the technique of CABG with or without cardiopulmonary by-pass Neurohormonal activation, electrolyte imbalance, fluid overload, surgical practices and finally an exaggerated inflammatory response has been proposed to be etiological factor. Advanced age, history of AF or heart failure, COPD, postoperative withdrawal of beta-blockers are independent risk factors of postoperative AF. Conversely, postoperative administration of beta-blockers, ACE inhibitors, potassium supplementation and NSAID were associated with a reduced risk of POAF. Pharmacological strategies for prevention of POAF may be divided in two main groups : the first one encompasses the use of antiarrhythmic drugs (amiodarone, metoprolol, sotalol) before and /or after surgery and has been extensively investigated in the last two decades. Recently an Italian study has shown that PUFA administration during hospitalization in patients undergoing CABG significantly decreased the incidence of POAF and was associated with a shorter hospital stay. Since an exaggerated inflammatory reaction may play a significant role in POAF, treatments directed to antagonize inflammation are presently under investigation. Despite different action mechanisms both hydrocortisone and statins have been shown to decrease post-operative AF risk. These two prophylactic regimens are not mutually exclusive and some data suggest that their association may be useful to further decrease the risk of POAF.
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