Immediate and Late Open Conversion after Ovation Endograft.

The risk of intraoperative open conversion during endovascular aortic repair (EVAR) still remains a main issue, albeit in a small percentage of cases. Open conversion can be extremely demanding and risky in relation to the type of the stent graft implanted and can be somehow challenging even for the most experienced vascular surgeons. We discuss a case of immediate conversion and 1 case of late conversion in patients previously treated with EVAR using the Ovation stent graft. The design of the endograft and its proximal sealing allowed the partial preservation of the graft and its use for proximal and distal anastomosis with a Dacron graft in both presented cases.