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Table 3: Comparison of patients with ICA stenosis 50%–69% and >70%; correlation of preprocedural Doppler flow parameters of carotid stenosis and new ischemic brain lesions on DWI after internal carotid artery stenting
Characteristics 50%–69% Stenosis (n = 20) ≥70% Stenosis (n = 32) Univariate Analysis, P Value Multivariate Analysis
OR P Value
ICA PSV (cm/s) 212 ± 25 351 ± 61 <.001 1.421 <.001
ICA EDV (cm/s) 77 ± 19 133 ± 38 .003 1.024 .021
ICA-CCA ratio 3.3 ± 0.9 4.8 ± 1.9 .007 1.009 .038
Symptomatic (%, No.) 55%–11 87.5%–28 .169 – –
Patients with new lesions (No.) 7 26 .013 – –
DWI lesion count per patient (preprocedural) 1.4 ± 0.7 5.1 ± 1.9 <.001 – –
DWI lesion count (new) per patient (postprocedural) 2.1 ± 0.9 4.7 ± 2.3 <.001 – –
Side of intervention, right (No.) 10 14 – – –
Mean lesion length (mm) 14.8 ± 3.8 17.6 ± 6.1 .451 – –