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Mean change in right ventricular fractional area change (RV-FAC) for patients with recurrent coarctation was calculated using a coarctation index (CI) of 0.75 or higher as a cutoff value. Patients with a CI of less than 0.75 had a significantly lower RV-FAC at the pre-cavopulmonary shunt (CPS) evaluation than patients with a CI of 0.75 or higher. (Stage I = Norwood palliation.)
