What is a common post-procedure complication that requires monitoring in LAAO patients?

Pericardial effusion is a significant post-procedure complication in patients who have undergone Left Atrial Appendage Occlusion (LAAO). This condition involves the accumulation of fluid in the pericardial sac surrounding the heart, which can occur as a result of irritation of the pericardium during the procedure. Monitoring for pericardial effusion is crucial since excessive fluid accumulation can lead to complications such as cardiac tamponade, which can compromise the heart's ability to pump effectively and result in hemodynamic instability.

Patients typically require close observation in the immediate post-procedure period, often including echocardiographic assessment to detect any fluid build-up. Early recognition and management are essential, as timely intervention can prevent serious outcomes related to this complication.

In contrast, increased appetite, weight gain, and minor bruising at the site are less critical complications in the context of post-LAAO monitoring and do not pose as immediate risks to the patient's health in the same way that pericardial effusion does.