Secundum atrial septal defect

Case contributed by Dr Erik Ranschaert


No prior cardiac history and mild exertional dyspnea.

Patient Data

Age: 60 years
Gender: Female

See below

Case Discussion

Secundum ASD or ostium secundum atrial septal defect 

In this case using cardiac CT the size of the ASD could be accurately measured (1,7 cm).

During respiratory inspiration, the negative intrathoracic pressure causes increased blood return into the right side of the heart. The shunting of blood from the left atrium to the right results in volume overloading of the right heart, resulting in an enlarged right ventricle.

Most individuals with an uncorrected secundum ASD don't have significant symptoms through early adulthood. About 70% develop symptoms by the time they are in their 40s. These patients will present with symptoms of dyspnea on exertion (shortness of breath with minimal exercise), congestive heart failure, or cerebrovascular accident(stroke).

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Case information

rID: 12553
Published: 15th Dec 2010
Last edited: 28th Sep 2017
System: Cardiac, Vascular
Inclusion in quiz mode: Included

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