Echocardiographic features of right ventricular volume overload

Abstract

Interventricular septal motion is studied in sixty tow cases clas­sified into 3 groups; Gr. 1-right ventricular volume overload (RVVO); Gr. II-combined right ventricular volume overload and left ventricular volume overload (RVVO+LVVO); Gr. III-com­bined right ventricular volume overload and right ventricular pres­sure overload (RVVO+RVPO). A linear relationship was obtained between the right ventricu-lar dimension index (RVDI) obtained echocardiographically and the magnitude of the left to right shunt at the atrial level (Qn/Qs). Two rare instances of false negatives in a hemodynamically in­significant left to right shunt and in a large ASD are reported. Modification of abnormal septal motion in Gr. II and Gr. III is studied. Lesion specific features of certain anomalies i.e. Ebstein's ano­maly, total anomalous pulmonary venous return (TAPVR) and en­docardial cushion defects (ECD) are discussed.