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Atrial septal defect
Other Resources UpToDate PubMed

Atrial septal defect

Contributors: Ryan Hoefen MD, PhD
Other Resources UpToDate PubMed

Synopsis

The presence of a defect (opening) in the septum that separates the 2 atria of the heart with resultant flow. It can be congenital or acquired. Associated clinical issues may include flow of oxygenated blood from the left atrium to the right atrium, producing a volume overload on the right heart; flow of unoxygenated blood from the right atrium to the left atrium resulting in cyanosis; and/or traverse of emboli from the venous circulation to systemic circulation, causing a stroke, transient ischemic attack, or other embolic events.

Codes

ICD10CM:
Q21.1 – Atrial septal defect

SNOMEDCT:
70142008 – Atrial Septal Defect

Differential Diagnosis & Pitfalls

Best Tests

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References

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Last Updated:01/11/2022
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Atrial septal defect
A medical illustration showing key findings of Atrial septal defect : Exertional dyspnea, Heart murmur, Heart palpitations, Atrial enlargement
Imaging Studies image of Atrial septal defect - imageId=8368132. Click to open in gallery.  caption: '<span>Cardiac MRI without contrast demonstrates opening in atrial septum, consistent with atrial septal defect.</span>'
Cardiac MRI without contrast demonstrates opening in atrial septum, consistent with atrial septal defect.
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