Outcomes of Symptomatic Extracranial Carotid Artery Stenting in Octogenarians: A Single-Center Retrospective Study on Restenosis, Risk Factors, and Complications

<i>Background and Objectives:</i> This study aimed to evaluate the 6-month restenosis rate, risk factors, and complications following carotid artery stenting (CAS) in patients aged 80 years and older, assessing the efficacy and safety of CAS in this population. <i>Materials and Methods:</i> Fifty-six patients aged ≥80 years with symptomatic extracranial carotid stenosis who underwent CAS between May 2023 and August 2024 were retrospectively analyzed. Follow-up at 6 months included Doppler ultrasonography to assess restenosis. Demographic, clinical, and procedure-related complications were recorded, and risk factors for in-stent restenosis were evaluated. <i>Results:</i> Among the patients, 42.9% were female (n = 24) and 57.1% were male (n = 32), with a mean age of 85.3 ± 4.40 years. The restenosis rate was 12.5%. Restenosis was significantly associated with smoking (<i>p</i> = 0.002), severe stenosis (<i>p</i> = 0.016), and advanced age (<i>p</i> = 0.045). The minor complication rate was 5.3%, and no major complications were observed. Smoking and advanced age were identified as independent risk factors for restenosis. <i>Conclusions:</i> CAS is a safe and effective treatment option for elderly patients. However, those with a history of smoking, advanced age, or severe stenosis are at an increased risk of restenosis. These findings provide valuable insights into the outcomes and safety of CAS in patients aged 80 and older.