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Updated: Aug 10, 2026
09:17
High-Resolution Endocardial and Epicardial Optical Mapping in a Sheep Model of Stretch-Induced Atrial Fibrillation
Published on: July 29, 2011
[The "flickering" phenomenon in the right atrium]
Terapevticheskii Arkhiv
|January 1, 1993
Summary
Flickering in the right auricle (FRA) is more common in congenital heart disease (CHD) than innocent cardiac murmur (ICM). Eustachian valve movements and endocardial structures likely cause FRA, impacting right atrial circulation understanding.
Area of Science:
- Cardiology
- Echocardiography
- Cardiac Anatomy
Background:
- Flickering in the right auricle (FRA) is an echocardiographic finding.
- Understanding the etiology of FRA is crucial for interpreting right atrial hemodynamics.
Purpose of the Study:
- To characterize flickering in the right auricle (FRA).
- To investigate the underlying causes of FRA in patients with innocent cardiac murmur (ICM) and congenital heart disease (CHD).
Main Methods:
- Two-dimensional echocardiography (ECG) examinations were performed on 278 ICM patients and 93 CHD patients.
- Clinical, topographic-anatomical, and intraoperative comparative investigations were conducted.
- Eustachian valve movements were tracked throughout the cardiac cycle.
Main Results:
- FRA was detected in 34.5% of ICM patients and 57.0% of CHD patients.
- Suggested causes of FRA include eustachian valve movements and specific endocardial structures at venous openings.
- FRA's dynamic movement correlated with the cardiac cycle.
Conclusions:
- FRA is more prevalent in CHD patients compared to ICM.
- Eustachian valve dynamics and specific endocardial features are implicated in FRA.
- Considering FRA characteristics is vital for understanding right atrial circulation in both normal and CHD states.
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