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Left and right ventricular morphology in complex congenital heart disease defined by two dimensional echocardiography
Insights
Two dimensional echocardiography effectively identifies right and left ventricular morphology in congenital heart disease. Recognizing mitral or tricuspid valves is the most reliable method for defining ventricular characteristics in complex cases.
Area of Science:
- Cardiology
- Pediatric Cardiology
- Medical Imaging
Background:
- Congenital heart disease (CHD) presents complex anatomical challenges.
- Accurate ventricular morphology assessment is crucial for diagnosis and treatment planning in CHD.
- Discordant ventricular connections require precise imaging techniques for differentiation.
Purpose of the Study:
- To evaluate the efficacy of two-dimensional echocardiography in distinguishing right and left ventricular morphology.
- To identify reliable echocardiographic criteria for ventricular morphology in patients with CHD and discordant connections.
- To assess the diagnostic accuracy of specific echocardiographic features.
Main Methods:
- Retrospective analysis of 19 patients with CHD and discordant ventricular connections.
- Utilized two-dimensional echocardiography to visualize ventricular morphology and atrioventricular valves.
- Established specific echocardiographic criteria for right and left ventricular identification.
Main Results:
- Recognition of the atrioventricular valve as mitral or tricuspid was the most accurate criterion, correctly identifying all ventricles.
- Chordal attachment and papillary muscle insertion patterns successfully identified most ventricles.
- Other criteria, such as endocardial surface texture and ventricular cavity shape, provided supportive evidence.
Conclusions:
- Two-dimensional echocardiography is a valuable tool for defining ventricular morphology in complex CHD.
- Atrioventricular valve identification is the most definitive echocardiographic marker for ventricular differentiation.
- Specific imaging features aid in the accurate assessment of ventricular anatomy in congenital heart disease.
Abstract:
The ability of two dimensional echocardiography to define right and left ventricular morphology in congenital heart disease was examined in 19 patients with discordant ventricular connections and abnormal relations, but with two ventricles and two unambiguous atrioventricular (A-V) valves. The two dimensional echocardiographic criteria used to identify a chamber as having right morphology were (1) an irregular endocardial surface, (2) insertion of chordae tendineae into the ventricular septum, (3) presence of an infundibulum, (4) a triangular-shaped ventricular cavity, (5) observation of a moderator band, and (6) recognition of the A-V valve as tricuspid. The two dimensional echocardiographic criteria for a left ventricular morphology were (1) a smooth endocardial surface, (2) presence of two discrete papillary muscle groups, (3) an ellipsoid-shaped ventricular cavity, and (4) recognition of the A-V valve as mitral. Identification of the associated A-V valve as mitral or tricuspid was the most reliable criterion, defining each ventricle in all 19 patients. The nature of chordal attachment and papillary muscle insertion successfully identified all left-sided and posteriorly related ventricles and 9 of the 19 anterior ventricular chambers. Other criteria were less useful although, when observed, they confirmed the ventricular type.