Related Experiment Video
Updated: Aug 15, 2026

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
Published on: February 8, 2022
Rare flow pattern in a patient with cor triatriatum
Michael Ghalchi1, Barry P Rosenzweig, Stephen B Colvin
1Noninvasive Cardiology Laboratory, NYU School of Medicine, New York, USA.
Insights
Doppler echocardiography revealed a rare flow pattern in cor triatriatum, mimicking mitral stenosis. This unique forward gradient occurs during both systole and diastole.
Area of Science:
- Cardiology
- Medical Imaging
- Congenital Heart Disease
Background:
- Cor triatriatum is a rare congenital heart defect involving an anomalous intra-atrial septum.
- Mitral stenosis can result from various conditions, including congenital abnormalities.
- Distinguishing between different causes of mitral inflow obstruction is crucial for appropriate management.
Observation:
- Doppler echocardiography was utilized to assess cardiac blood flow patterns.
- A specific, uncommon flow pattern was identified in a patient with cor triatriatum.
- This pattern presented as a forward pressure gradient across the mitral valve.
Findings:
- The observed flow pattern, characterized by a forward gradient in both systole and diastole, is a rare finding.
- This specific Doppler signature is typically associated with subvalvular or supravalvular mitral stenosis.
- The study highlights the presence of this gradient in cor triatriatum, suggesting potential diagnostic overlap.
Implications:
- The findings emphasize the importance of considering cor triatriatum in the differential diagnosis of mitral stenosis with atypical flow patterns.
- Accurate echocardiographic assessment is vital for differentiating cor triatriatum from other causes of mitral obstruction.
- Understanding these rare flow dynamics can improve diagnostic accuracy and patient outcomes in congenital heart disease.
Abstract:
Doppler echocardiography demonstrated a rare flow pattern due to cor triatriatum that is also present in subvalvular or supravalvular mitral stenosis: a forward gradient, in both systole and diastole.
Related Concept Videos
Coronary Circulation
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
Aortic Regurgitation II: Clinical Features and Diagnostic Tests
Cardiovascular System Abnormal Findings II: Auscultation
Abnormal Heart Sounds
Gallops:
Dysrhythmias IV: Characteristics of Bradyarrhythmias
Dysrhythmias III: Characteristics of Dysrhythmias
Disturbances in Heart Rhythm
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...

