Study note
MedicineCardiology

Atrial septal defect: imaging and percutaneous closure

THE CONTEXT
The target passage illustrates an atrial septal defect on transoesophageal echocardiography and explains how a percutaneous device seals it.

Echocardiographic appearance

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Transoesophageal echocardiography shows the defect between the left and right atria.
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Doppler colour-flow imaging demonstrates flow across the defect.

Percutaneous closure

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The closure device is delivered across the interatrial septum. A disc is deployed on each side to seal the defect.
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