Angiographic Recognition of Overriding Atrioventricular Valves: An Anatomic-Angiographic Correlate
Six cases with overriding and/or straddling atrioventricular (AV) valves were analyzed anatomically and were correlated with the angiographic findings. The angiograms were recorded in 35 mm cine, using axial projections. The anatomic studies were performed after fixation of the specimen and through sections designed to demonstrate the morphology of abnormally positioned AV valves. The atrial situs was solitus in all cases. The ventricular chambers were normally related in four cases and were in mirror image of the norm in two cases. All cases had two well-defined AV valves. The AV connection was concordant and parallel in four cases and discordant in two. The ventriculoarterial connection was double-outlet in five cases and discordant in one.
KeywordsMitral Valve Tricuspid Valve Ventricular Septal Defect Ventricular Septum Atrial Septum
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