“…Complications from untreated cyanotic congenital heart disease include erythrocytosis, problems with hemostasis, hyperuricemia, renal dysfunction, cerebrovascular accidents, endocarditis, brain abscesses, supraventricular and ventricular arrhythmias, and the development of Eisenmenger's Syndrome [3,[5][6][7][8]. Female patients may experience a delay in menarche or menorrhagia and if they chose to become pregnant, pregnancies may result in a high incidence of miscarriage, premature births or low birth weight babies [9,10]. If not repaired, the 2008 ACC/AHA guidelines recommend prophylaxis for the prevention of endocarditis and the avoidance of competitive sports [5].…”