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Related Experiment Video

Updated: Mar 29, 2026

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure

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Published on: February 8, 2022

Unrecognized Atrial Septal Defect Presenting with Postoperative Occipital Infarction.

Jasper Lin¹, Vinicius Carraro do Nascimento², Jeremy Hefford¹

¹Department of Cardiology, Division of Specialist Medical Services, Gold Coast Hospital and Health Services, Southport, QLD 4215, Australia.

Diagnostics (Basel, Switzerland)

|March 28, 2026

Summary

This summary is machine-generated.

A patient experienced vision loss after surgery due to a stroke caused by a hidden heart defect. Prompt imaging and closure of the atrial septal defect resolved the issue, preventing further strokes.

Keywords:

atrial septal defect embolic stroke paradoxical embolism percutaneous closure

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Published on: June 15, 2015

Area of Science:

Neurology
Cardiology
Radiology

Background:

Postoperative stroke is a rare but serious complication.
Occult cardiac shunts can lead to paradoxical embolism.
Homonymous hemianopia can be a symptom of occipital lobe stroke.

Purpose of the Study:

To report a case of acute homonymous hemianopia following surgery.
To investigate the underlying cause of embolic stroke in this patient.
To highlight the role of multimodality imaging in diagnosing interatrial shunts.

Main Methods:

Neuroimaging (MRI/CT) to identify stroke.
Transthoracic echocardiography to screen for shunts.
Transesophageal echocardiography for detailed cardiac imaging.
Percutaneous closure of atrial septal defect.

Main Results:

A 49-year-old woman developed right occipital infarction leading to homonymous hemianopia.
Echocardiography revealed an ostium secundum atrial septal defect.
Percutaneous closure of the defect was successful with complete shunt resolution.

Conclusions:

Multimodality imaging is crucial for detecting occult interatrial shunts.
Paradoxical embolism is a likely cause of this postoperative stroke.
Early diagnosis and intervention can prevent recurrent embolic events.