A Single-center Retrospective Study with 5- and 10-year Follow-up of Carotid Endarterectomy with Patch Graft.

Carotid endarterectomy (CEA) is widely used for cervical artery stenosis. In Japan, primary closure after endarterectomy has been a standard technique. Recently, the patch closure has been shown to be superior to the primary suture for the prevention of restenosis and ipsilateral stroke. This study evaluated the 5- and 10-year outcomes following CEA with patch graft closure in our institution. Between January 2000 and March 2013, 134 patients, who underwent CEA with patch graft closure were investigated in the current retrospective study. Among these patients, 102 CEAs in 97 patients were followed up for 5 years and 66 CEAs in 61 patients were for 10 years after the procedure. Restenosis was defined as >50% recurrent luminal narrowing at the endarterectomy site. In 5 years, symptomatic restenosis exhibited minor stroke in one patient at 58 months after CEA (restenosis rate 1.0%). The ipsilateral minor stroke occurred in three patients including the above case (2.9%). In 10 years, asymptomatic restenosis occurred in three patients in addition to the above symptomatic case (restenosis rate 6.1%), and the ipsilateral minor stroke occurred in four patients (6.1%). Carotid endarterectomy with patch graft exerted a high protective effect from restenosis up to 5 and 10 years in our institution. The number of carotid artery stenting is increasing all over the world but we speculated that the established surgical procedure of patched CEA prevented restenosis and ipsilateral stroke.