WRONG....There is usually right atrial dilation with increased pressure leading to a Right to Left intracardiac shunt resulting in some degree of cyanosis. The increased right atrial pressures can also result in passive hepatic congestion leading to hepatomegaly. The increased right atrial pressures are due of course to the regurgitant tricuspid valve. Ebstein's anomaly is listed along with Tetralogy of Fallot, Eisenmenger's syndrome, Tricuspid atresia as Congenital Heart Defects resulting in a Right to Left Intracardiac Shunt. Reference: P. 50, Stoelting's Anesthesia and Co-Existing Disease, Nelson's Textbook of Pediatrics, and others. This is not a normal heart (with normal left atrial pressure being greater than the right atrial pressure).
