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Echocardiographic features of total anomalous pulmonary venous drainage into the coronary sinus
Insights
Echocardiography can identify an enlarged coronary sinus, a key indicator of total anomalous pulmonary venous drainage. This method aids in diagnosing specific congenital heart conditions in infants.
Area of Science:
- Pediatric Cardiology
- Diagnostic Imaging
- Congenital Heart Disease
Background:
- Total anomalous pulmonary venous drainage (TAPVD) is a critical congenital heart defect.
- Accurate diagnosis is essential for timely intervention.
- Echocardiography is a primary non-invasive diagnostic tool.
Purpose of the Study:
- To evaluate the echocardiographic features of an enlarged coronary sinus.
- To assess the utility of echocardiography in diagnosing TAPVD to the coronary sinus.
- To establish echocardiographic landmarks for identifying the coronary sinus.
Main Methods:
- Echocardiograms were analyzed from infants with TAPVD and a child with persistent left superior vena cava.
- Standard echocardiographic views were used to visualize cardiac structures.
- Phasic motion analysis was employed to differentiate coronary sinus echoes.
Main Results:
- An enlarged coronary sinus was consistently visualized posterior to the left atrium.
- The aortic root served as a reliable reference point for locating the coronary sinus.
- Characteristic phasic motions helped distinguish coronary sinus echoes.
- Enlarged common pulmonary venous chamber behind the right atrium confirmed TAPVD to the coronary sinus.
Conclusions:
- Echocardiography is effective in identifying an enlarged coronary sinus, aiding TAPVD diagnosis.
- The described echocardiographic approach provides a reliable method for diagnosing TAPVD to the coronary sinus.
- Positional variability can limit diagnosis for other TAPVD types using M-mode echocardiography.
Abstract:
Echocardiograms were obtained from five infants with total anomalous pulmonary venous drainage to the coronary sinus or the portal system or the superior vena cava and from one child with a secundum atrial septal defect and a large coronary sinus due to persistence of the left superior vena cava. The results demonstrate that an enlarged coronary sinus is positioned consistently posterior to the left atrium in approximately the same horizontal plane as the aortic valve. Echocardiographically the coronary sinus can be located as an echo complex behind the left atrium by using the aortic root as a reference point. The echo complex can be differentiated from the other spurious echoes in the left atrium by its characteristic phasic motions. The additional demonstration of the enlarged common pulmonary venous chamber behind the right atrium confirms the diagnosis of anomalous pulmonary venous drainage to the coronary sinus. For other types of anomalous pulmonary venous return, anatomic diagnosis with single crystal M mode echocardiography is not always possible because of the positional variability of the common pulmonary venous chamber in relation to the left atrium.