Modification of the viabahn padova sutureless technique for challenging anastomosis between a prosthetic graft and a circumferentially calcified target artery

摘要

Purpose: To describe modification of the Viabahn Padova Sutureless (ViPS) technique for challenging anastomosis between a prosthetic graft and a circumferentially calcified target artery. Technique: The technique is demonstrated in a 75-year-old man with complete superficial femoral artery (SFA) occlusion and reconstitution of a circumferentially calcified aboveknee popliteal artery. A 7-mm Viabahn endoprosthesis with its constraining string was withdrawn from its delivery system; the string at the proximal edge of the stent was gently cut with a scalpel, causing the proximal part of the stent to deploy, while the undeployed distal tip with its smooth profile retained its commercial orientation. The proximal end was subsequently sutured to a 7-mm polytetrafluoroethylene (PTFE) graft. After surgical exposure, the popliteal artery was transected, and the undeployed distal portion of the Viabahn was inserted into the distal segment, supported by a stiff guidewire. By pulling the constraining string, the stent was deployed in a "non-reversed" fashion and subsequently dilated to achieve optimal apposition. Finally, the proximal end of the PTFE graft was tunneled under the sartorius muscle and sutured to the common femoral artery. Conclusion: This modification to the ViPS technique using a "non-reversed" method of Viabahn stent preparation allows a safer and more accurate deployment of the endoprosthesis in the calcified target artery.