Key Points : • Interventional therapies directed at fenestration closure
in the Fontan patient must rely on good hemodynamic data • The Large
Optimus-CVSTM stent is an additional armamentarium for fenestration
closure however, longer term follow up is needed • Multi institutional
studies defining the long-term benefits of fenestration closure and
outlining fenestration management guidelines may help improve the
long-term morbidity and mortality in this group of patients.