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Characterization of Malalignment between Atrial and Ventricular Septa in Overriding/Straddling Tricuspid and Mitral Valves

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Congenital Heart Disease 2021年第1期16卷 1-16页

作者： Mika Saito dragulescu andreea Shi-Joon Yoo The Labatt Family Heart Centre The Hospital for Sick ChildrenUniversity of TorontoTorontoCanada Division of Cardiology Department of PaediatricsThe Hospital for Sick ChildrenUniversity of TorontoTorontoCanada Department of Diagnostic Imaging The Hospital for Sick ChildrenUniversity of TorontoTorontoCanada

Objective:Overriding/straddling of an atrioventricular valve is a consequence of atrial-ventricular septal *** sought to characterize the malalignment by analogizing it to a flap-door and using structured ***:The echocardiograms and magnetic resonance images of 35 patients with overriding/straddling tricuspid or mitral valve were evaluated to assess the following modifiers;the malaligned part of the septum,the reference structure,and the mechanism,direction and severity of ***:The pathology included classic overriding tricuspid valve in 15,classic overriding mitral valve in 12,and overriding tricuspid valve with left juxtaposition of atrial appendages in *** classic overriding tricuspid valve,the ventricular septum was hinged to the anterior interventricular groove and its insertion to the posterior interventricular groove was displaced toward the right *** VSD primarily involved the inlet but also extended toward the anterior interventricular *** classic overriding mitral valve,the ventricular septum was hinged to the posterior interventricular groove and crux *** insertion to the anterior interventricular groove was displaced toward the left *** VSD primarily involved the anterior part but also extended toward the *** tricuspid valve with left juxtaposition of atrial appendages had a mild degree of malalignment with displacement/rotation of the atrioventricular *** spaced short-axis images were most helpful in characterizing the ***:Overriding/straddling atrioventricular valves can be easily understood by analogizing the atrial-ventricular septal malalignment to a flap-door and describing the pathology in a structured *** to what has previously been known,the VSD is not limited to the inlet or outlet part of the ventricular septum.

关键词： Malalignment ventricular septal defect overriding straddling tricuspid mitral

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