Abstract
The porcine stentless Freestyle xenograft (Medtronic Inc) has proved to be an ideal substitute for aortic root replacement (ARR) as it provides excellent hemodynamics and durability.1,2 Nonetheless, like other bioprostheses, structural valve deterioration is observed in the long term, mostly due to aortic cusp tears. However, spontaneous rupture of the Freestyle xenograft aortic wall has also been reported.3,4 We present 2 patients who developed pseudoaneurysm after ARR using a Freestyle xenograft, related to spontaneous rupture of the noncoronary sinus (NCS) of Valsalva.
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