What should be checked for prior to ablation to prevent thromboembolism?

Prior to performing ablation for atrial fibrillation, it is crucial to assess for the presence of blood clots in the left atrial appendage. This area of the heart is a common site for thrombus formation in patients with atrial fibrillation due to stagnant blood flow. If blood clots are present and not identified prior to the procedure, there is a significant risk that dislodged clots could lead to thromboembolic events, such as a stroke, during or after the ablation process.

Effective pre-procedural imaging, typically through transesophageal echocardiography, can help visualize the left atrial appendage and confirm whether there are any clots present. If clots are found, appropriate anticoagulation therapy can be initiated to minimize the risk of complication. Ensuring the absence of thrombus in this region is a critical component of patient safety during atrial fibrillation ablation.