Investigating the Frequency of Stent Fracture and its Impact on in-Stent Restenosis in Patients Undergoing Carotid Artery Stenting

Objective: This single-center study aimed to assess the incidence and predictors of carotid artery Xact stent fractures (SF) and their impact on in-stent restenosis (ISR) during long-term follow-up. Methods:A cohort of 108 patients (97 males, median age 69.4±8 months) who underwent Xact stent placement for internal carotid artery stenosis between 2013 and 2021 and were diagnosed with SFs through fluoroscopy in 2022 were included.SFs were categorized as types I-V based on fracture characteristics.Follow-up included duplex ultrasound examinations to assess stent patency. Results:The average follow-up duration was 49.2±24.3months, with ISR observed in 10 patients.Twenty-three SFs (21.3%) were identified: type I (5 patients), type II (7 patients), type III (3 patients), type IV (6 patients), and type V (2 patients).Calcification and stent length significantly predicted SFs (p<0.001;p<0.028). Conclusion:Calcification and stent length are associated with Xact SFs, but SFs do not impact ISR during long-term followup. ÖZAmaç: Bu tek merkezli çalışmanın amacı, uzun süreli izlem sırasında karotis arter Xact stent kırıklarının (SF) görülme sıklığını ve öngörücülerini değerlendirmek ve bunların stent içi restenoz (ISR) üzerindeki etkisini değerlendirmektir.Yöntemler: 2013-2021 yılları arasında iç karotis arter darlığı için Xact stent yerleştirilen ve 2022'de floroskopi ile SF tanısı konan 108 hasta (97 erkek, ortanca yaş 69,4±8 ay) kohortuna dahil edildi.SF'ler kırık özelliklerine göre I-V tiplerine ayrıldı.