Atrioventricular Interdependence in Fontan Patients and Its Impact on Exercise Performance

BACKGROUND: In Fontan circulation, ventricular filling is dependent on active atrial contraction. This atrioventricular interdependence is key for optimal exercise performance. The objectives of this study were to evaluate the relationship between atrial and ventricular deformation in young Fontan survivors and their relationship to exercise performance (peak oxygen consumption; VO2 max). METHODS: Single center retrospective cohort study...