Variations in Anticoagulation Practices Following the Maze Procedure.

Area of Science:

• Cardiology
• Cardiac Surgery
• Clinical Practice

Background:

• Real-world anticoagulation strategies after Maze procedure with left atrial appendage amputation are not well-defined.
• Understanding current practices is crucial for patient management and outcome improvement.

Purpose of the Study:

• To investigate current anticoagulation practices following left atrial appendectomy during the Maze procedure.
• To compare outcomes, including death, bleeding, and stroke incidence, between patients who continued anticoagulation and those who stopped.

Main Methods:

• A cohort study of 113 patients undergoing Maze procedure with left atrial appendage amputation from June 2005 to November 2012.
• Prospective data collection including interviews and Holter monitoring.
• Comparison of outcomes between patients receiving 3 months of anticoagulation versus those not on long-term anticoagulation.

Main Results:

• Two strokes occurred in 66 patients on anticoagulation (Group A), versus none in 47 patients not on anticoagulation (Group B) (p=0.27).
• Five bleeding events were reported, with 4 in the initial 3 months of anticoagulation and 1 later event in Group A (p=0.10).
• No significant baseline differences in atrial fibrillation, CHADS2 score, or left atrial size were observed between groups.

Conclusions:

• No standardized anticoagulation approach is evident in real-world practice post-Maze procedure with left atrial appendage amputation.
• Patients undergoing this combined procedure appear to have a low risk of stroke.
• Further investigation is needed to determine the optimal anticoagulation strategy for these patients.