FONTAN PATIENTS WITH HEART FAILURE AND PRESERVED EJECTION FRACTION HAVE SIMILAR AFTERLOAD BUT MORE FAVORABLE VENTRICULO-ARTERIAL COUPLING THAN FONTAN PATIENTS WITH REDUCED EJECTION FRACTION

The contribution of cardiac mechanics to the heterogenous heart failure phenotypes seen in Fontan patients have not been investigated. The objective of this study was to investigate the differences in mechanics between patients with heart failure and preserved ejection fraction (HFpEF) versus those