- Baby V is an 11-year-old female with tricuspid atresia, restrictive VSD, and PS who underwent a right-sided BDG at 10 months of age for cyanosis. She now presents with exertional dyspnea and increasing cyanosis. - Examination found cyanosis, clubbing, and oxygen saturation of 50%. Echo showed patent glenn shunt and small restrictive VSD with moderate ASD, no forward flow across PA, and good ventricular function. - Cardiac cath was performed to assess PA pressures, collaterals, and suitability for Fontan. It found elevated PA pressures but improved Qp/Qs ratio, making her a candidate for Font