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Angiographic study of univentricular heart of right ventricular type
Insights
This study analyzes 10 cases of right ventricular type univentricular heart, detailing its unique chamber morphology and associated anomalies. Angiography effectively revealed anatomical details, aiding diagnosis of this congenital heart malformation.
Area of Science:
- Cardiology
- Pediatric Cardiology
- Congenital Heart Disease
Background:
- Univentricular heart of the right ventricular type is a complex congenital malformation.
- It features a dominant right ventricular chamber and a smaller, left ventricular-like trabecular pouch.
- These chambers are separated by a septum but connected via an inlet septal defect.
Purpose of the Study:
- To describe the angiographic findings in 10 cases of right ventricular type univentricular heart.
- To correlate angiographic details with autopsy findings.
- To evaluate the utility of angled angiography in visualizing anatomical intricacies.
Main Methods:
- Retrospective analysis of 10 cases with univentricular heart of the right ventricular type.
- Angiographic studies performed using standard frontal/lateral views (7 cases) and angled techniques (3 cases).
- Review of associated anomalies including atrial situs, atrioventricular valve status, and great artery origins.
Main Results:
- All cases exhibited double outlet right ventricle.
- The aorta originated anteriorly to the pulmonary artery in 9 cases.
- Angiography revealed variations in chamber size, atrioventricular valve involvement, and trabecular pouch location, with angled views enhancing detail.
Conclusions:
- Angiography is crucial for delineating the complex anatomy of right ventricular type univentricular heart.
- Angled angiography offers superior visualization of anatomical details and associated anomalies.
- Findings highlight the consistency of double outlet right ventricle and variations in other features.
Abstract:
An angiographic analysis of 10 cases of univentricular heart of the right ventricular type is reported. This congenital malformation is characterized by a large chamber with right ventricular morphology that receives both atrioventricular valves, and a second, smaller chamber, a trabecular pouch, with left ventricular morphology. These chambers are separated by a posterior septum but are connected by an inlet septal defect. The angiographic studies were done using the angled angiographic techniques in three patients and the standard frontal and lateral angiographic views in seven cases. The atrial situs in seven patients was solitus, in one inversus, and in two it was ambiguus with left isomerism. In seven patients the usually large right ventricular chamber received two atrioventricular valves and in four patients, one atrioventricular valve was straddling. Three patients had atresia of one atrioventricular valve. The trabecular pouch was small in seven patients but relatively large in three. In six patients the trabecular pouch was located posterior and to the left of the right ventricular chamber and in four anterior and to the right. Double outlet right ventricle was present in all cases. The aorta arose anteriorly to the pulmonary artery in nine patients and posteriorly in one. An autopsy was performed in one case and its correlation with the angiographic findings was remarkable. The angiographic demonstration of the anatomicaly details of this entity and its associated anomalies was facilitated by angled angiography.