AMA Category 1 Credit for Physicians Only.
ASRT CME is not available.
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|The structure in the right atrium extends from the IVC/Eustachian valve to the interatrial septum/coronary sinus. The structure is a remnant of the sinus venosus valve that shunts blood from the IVC across the interatrial septum inutero and is call a Chiari Network. A Chiari network occurs in 2-3% of cases and can present in many differnt forms from a slight wispy filament to a network or perforated strings. A Chiari network can make placement of catheters technically challenging. A Chiari network can simulate a mass or vegetation in patients with clinical diagnoses of bacterial endocarditis. A Chiari network has been a source of thromboembolic disease, endocarditis, arrhythmias, and entrapment of catheters. Chiari networks have an associated finding of patient foramen ovale.|
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