Intracavitary electrocardiography is a diagnostic aid in-
Tricuspid regurgitation
Endocardial fibroelastosis
Endomyocardial fibrosis
Ebstein's anomaly of the tricuspid valve
Ans. is 'd' i.e., Ebstein's anomaly of tricuspid valve Four chambered view in two dimension echocardiogram is diagnostic as it outlines the displaced tricuspid valve.