Key result
Atrial septal aneurysm carries a 2-3% prevalence and is linked to arrhythmias and cryptogenic stroke.
Why the study?
The clinical significance of atrial septal aneurysm remains unclear despite reports suggesting links with atrial arrhythmias, cryptogenic stroke, and other embolic events.
Answers are grounded in this paper and cite their sources.
Atrial septal aneurysm is an echocardiographic abnormality with a 2-3% prevalence that may be linked to atrial arrhythmias and cryptogenic stroke.
Atrial septal aneurysm (ASA) is a well-recognised abnormality on the echocardiogram with a prevalence rate of 2–3%. It is a mobile, localised saccular deformity of the atrial septum and is defined as excursion of the septal tissue of greater than 10 mm from the plane of the atrial septum into either atrium or a combined excursion of 15 mm.1 ASA may be isolated or associated with another anomaly such as patent foramen ovale, atrial septal defect and mitral valve prolapse. Clinical significance of ASA remains unclear but several reports suggest possible link with atrial arrhythmias, increased prevalence of cryptogenic stroke and other embolic events.
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Teo et al. (2025) conducted a review in Atrial septal aneurysm. Atrial septal aneurysm is an echocardiographic abnormality with a 2-3% prevalence that may be linked to atrial arrhythmias, cryptogenic stroke, and other embolic events.
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