Overview
Left atrial appendage aneurysm is a rare congenital anomaly characterized by localized dilation of the left atrial appendage, often presenting with symptoms such as arrhythmias or embolic events 14.Diagnosis
Imaging Techniques: Echocardiography (transthoracic and transesophageal) is crucial for diagnosis 134.
Additional Imaging: Radionuclide scanning and angiography can provide confirmatory findings 4.
Clinical Presentation: Often identified incidentally or presents with symptoms like systemic emboli or supraventricular arrhythmias 4.Management
Surgical Resection: Recommended approach, traditionally performed on cardiopulmonary bypass; newer techniques include off-pump resection using tourniquet snare and stapling devices 23.
Intraoperative Guidance: Utilization of intraoperative transesophageal echocardiography enhances surgical precision 3.Special Populations
Pediatrics: Congenital nature suggests potential for early surgical intervention with favorable outcomes 1.
Comorbidities: Management strategies may need adaptation based on coexisting conditions like arrhythmias or embolic risk 4.Key Recommendations
Utilize multimodal imaging including echocardiography and transesophageal echocardiography for accurate diagnosis and surgical planning (Evidence: Moderate 134).
Consider surgical resection as the primary treatment, with preference for techniques minimizing cardiopulmonary bypass use when feasible (Evidence: Weak 23).
Incorporate intraoperative imaging such as transesophageal echocardiography to guide resection procedures (Evidence: Expert opinion 3).References
1 Brenneman DJ, Pitkin AD, Gupta D, Bleiweis MS, Reyes KM, Chandran A. Left Atrial Appendage Aneurysm Characterized by Multimodal Imaging. World journal for pediatric & congenital heart surgery 2020. link
2 DiBardino DJ, Aggarwal A, Knudson JD. Off-pump snare technique for congenital left atrial appendage aneurysm. Cardiology in the young 2014. link
3 Burke RP, Mark JB, Collins JJ, Cohn LH. Improved surgical approach to left atrial appendage aneurysm. Journal of cardiac surgery 1992. link
4 Krueger SK, Ferlic RM, Mooring PK. Left atrial appendage aneurysm: correlation of noninvasive with clinical and surgical findings: report of a case. Circulation 1975. link