Freedom from Re-Operation
At five years after AVR, freedom from reoperation was significantly poorer in patients receiving CorMatrix (12.5%) compared to patients receiving autologous pericardium (62.5%) (P = 0.01) (Figure 1). 16 patients (42%) underwent a re-operation of the aortic valve, with 10 patients requiring re-operation due to severe or recurrent AR and 6 patients with severe, critical, or worsening AS. 6 patients underwent the Ross procedure, 2 underwent AVr with autologous pericardium, 5 underwent AVr with the Carpentier Edwards Valve, and 3 underwent AVr with the Resilia Bovine Pericardial Valve. The mean length between the initial operation and re-operation was 1390 days.