At 14 months, patients in the SVR Trial showed no differences in RV function whether they had received an RVPAS or MBTS, but longer-term results in the SVR Extension Trial demonstrated greater RVEF deterioration after RVPAS. Encouragingly, other indices of RV function remained stable prior to Fontan regardless of shunt type.
MBTS = modified Blalock-Taussig shunt; RV = right ventricle/ventricular; RVPAS = right ventricle-to-pulmonary artery shunt; SVR = Single Ventricle Reconstruction