ABSTRACT
Objective To explore the predictors of perioperative ischemic stroke following percutaneous transluminal angioplasty and stenting.Methods We retrospectively evaluated data on 416 percutaneous transluminal angioplasty and stenting (PTAS) procedures at (334 males,82 females,aged 40-85 years,falling into ASA Ⅰ-Ⅲ) a single institution.Logistic regression was used to analyze the role of clinical,angiographic and hemodynamic variables on periprocedural ischemic strokes.Results Among 328 patients underwent PTAS for the treatment of extracranial stenosis,10 patients (3.0％) had perioperative ischemic stroke.Among the 88 stenting for intracranial stenosis,6 patients (6.8 ％) had perioperative ischemic stroke.Multivariable predictors of perioperative ischemic stroke for stenting for extracranial stenosis were the presence of untreated intracranial artery stenosis (OR =9.44,95％CI 2.36-37.71,P=0.001) and intraoperative absolute minimal SBP＜90 mm Hg (OR=9.13,95％CI 1.35-61.76,P =0.023).The independent predictors of perioperative ischemic stroke following PTAS for intracranial stenosis included the patients' increasing age (OR =1.25,95 ％ CI 1.04-1.51,P=0.021),presence of calcific plaques (OR=11.02,95％CI 1.11-109.25,P=0.040) and untreated intracranial artery stenosis (OR =44.81,95％ CI 1.99-1 011.84,P =0.017).Conclusion For patients with extracranial stenosis,suffering from the presence of untreated intracranial artery stenosis and intraoperative absolute minimal SBP＜90 mm Hg are the independent risk factors for perioperative ischemic stroke.The patients' increasing age,presence of calcific plaques and untreated intracranial artery stenosis were the independent risk factors for this complication in patients with intracranial stenosis.