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2012-05-10-15 Chiari net ©Laura Tetreault  www.TheFetus.net     

Chiari net

Laura Tetreault, RDMS, Susan Byers, RDMS, Michael G. Pinette, MD

Case report:

This is a G3P2 35-year-old patient seen at 32 weeks 3 days.
The father of the fetus was born with a bicuspid aortic valve and had surgery for this. An episode of tachycardia was noted during the ultrasound exam with a fetal heart rate of 214 bpm. A thin "lace-like" membrane is seen in the right atrium. Findings were thought to most likely represent a remnant of the septum spurium known as a Chiari net. The remainder of the cardiac anatomy appears normal at this time.

Image 1: The big arrow shows the typical appearance of Chiari net, the small one shows 
the flap valve of the foramen ovale.
 


Video:


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