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Reinforcement of left ventricular assist device outflow grafts to prevent kinking.
Annals of Thoracic Surgery 2007 July
Because of their small size, rotary left ventricular assist devices (LVADs) can be implanted through several alternative approaches, including transdiaphragmatic LVAD insertion through a left subcostal incision with anastomosis of the outflow graft to the retroperitoneal supra-celiac aorta and a left thoracotomy approach with anastomosis to the descending thoracic aorta. More recently we have added a counter-incision to allow the outflow graft of a transdiaphragmatic LVAD to be tunneled through the right chest and anastomosed to the ascending aorta. However, constructing a tension-free, nonkinking lie of the outflow graft can be challenging. We have found that placing a 10-cm to 15-cm length of polytetrafluoroethylene graft coaxially over the LVAD outflow graft ensures a smooth, kink-free lie. Thus far 12 patients have undergone reinforcement of the LVAD outflow graft prior to graft-to-aorta anastomosis. In all cases, graft lie was facilitated and kinking was eliminated.
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