The Fontan operation has improved the survival of children born with
single ventricle physiology. Selecting candidates for the Fontan
operation may be difficult on borderline cases. No clear criterion has
been established on the risk for staged Fontan palliation. Another
aspect that remains controversial is the indications for fenestration.
Intraoperative pulmonary flow study may identify high-risk patients for
the procedure. In this report, the authors describe their results with
Fontan procedures in children with pulmonary pressure >15