Evaluation of mid- and long-term outcomes following carotid endarterectomy with a double-layer primary arteriotomy closure technique.

Background: This study aims to evaluate the mid- and long-term outcomes of patients who underwent carotid endarterectomy with double-layer primary arteriotomy closure technique. Methods: Between January 2011 and January 2021, a total of 94 patients (58 males, 36 females; mean age: 66.5±8.5 years; range, 40 to 82 years) who underwent carotid endarterectomy were retrospectively analyzed. Doppler ultrasonography, computed tomography or magnetic resonance angiography, and digital subtraction angiography were utilized during follow-up. Stenoses of 50% and above were defined as restenosis. Results: The mean carotid clamp time was 11.72±2.30 and the mean follow-up was 54.18±27.71 months. Two patients (2.1%) underwent revision due to bleeding and hematoma. No new cerebrovascular events were observed in the postoperative period (<30 days). During the follow-up, six (6.4%) patients with ≥50% stenosis on the same side and 14 (14.9%) patients with stenosis on the opposite side were identified. Primary patency rates were found to be 99% at one year, 95.4% at three years, 90% at five years, 71% at seven years, and 71% at nine years. Age was the only independent risk factor affecting survival. Conclusion: Our study results suggest that this technique can be used safely in patients with appropriate internal carotid artery diameter with favorable mid- and long-term patency rates.