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Angiographic studies of atrioventricular discordance
Insights
Axial angiocardiography aids in diagnosing atrioventricular discordance (AVD) by revealing unique ventricular septal orientation and aiding defect localization. This imaging technique is crucial for identifying left ventricular outflow tract obstruction.
Area of Science:
- Cardiology
- Medical Imaging
- Pediatric Cardiology
Background:
- Atrioventricular discordance (AVD) is a complex congenital heart defect.
- Accurate anatomical characterization is essential for diagnosis and management.
Purpose of the Study:
- To evaluate the diagnostic value of conventional and axial angiocardiography in 26 AVD cases.
- To analyze angiographic features for precise characterization of atrioventricular and ventriculoarterial connections.
Main Methods:
- Retrospective analysis of 26 patients with AVD.
- Conventional and axial angiocardiography were performed.
- Detailed assessment of ventricular anatomy and septal orientation.
Main Results:
- Distinct angiographic features of ventricles were observed based on atrial situs and cardiac position.
- Ventricular septum shows peculiar orientation in AVD.
- Axial angiocardiography improved detection and localization of ventricular septal defects.
- Conventional frontal views visualized the entire ventricular septum, especially in malpositioned hearts.
- Axial projection proved useful for diagnosing left ventricular outflow tract obstruction.
Conclusions:
- Conventional and axial angiocardiography are valuable tools for diagnosing AVD.
- Axial views enhance the identification of specific anatomical abnormalities, including ventricular septal defects and outflow tract obstruction.
Abstract:
The results and value of conventional and axial angiocardiography were studied in 26 cases of atrioventricular discordance (AVD). The angiographic anatomy of this malformation was analyzed to determine the precise characteristics of atrioventricular and ventriculoarterial connections. The left and right ventricles in atrial situs solitus and levocardia show angiographic features that differ from those seen in atrial situs solitus and dextrocardia. The same differences are found in atrial situs inversus. Regardless of the type of ventriculoarterial connections, the ventricles maintain the same angiographic characteristics. The ventricular septum in AVD in situs solitus and levocardia and situs inversus and dextrocardia has a peculiar orientation. The use of axial angiocardiography facilitates detection and localization of the ventricular septal defect. In cases of malposition of the heart, the conventional frontal view allows visualization of the ventricular septum in all of its length. The axial projection is useful in diagnosing left ventricular outflow tract obstruction.