Comparison of Aspiration versus Stent Retriever Thrombectomy as the Preferred Strategy for Patients with Acute Terminal Internal Carotid Artery Occlusion: A Propensity Score Matching Analysis

The eTICI grade distribution. The breakdown of the eTICI grade of the (A and C) AT and SRT groups in the overall sample and the (B and D) PSM sample. The grades included 0, 1, 2a, 2b, 2c, and 3, with 0 indicating no revascularization; 1 thrombus reduction without any revascularization of distal arteries; 2a, <50% revascularization; 2b, 50%–89% revascularization; 2c, 90%–99% revacularization; and 3 complete revascularization. A, The distribution of the final eTICI grade in the overall sample. Significant differences were noted between the AT and SRT groups in the overall sample in the successful revascularization rates (eTICI 2b–3: OR 1.23 [95% CI, 1.10–1.38]; eTICI 2c–3: OR 4.62 [95% CI, 1.72–12.43]; and eTICI 3: OR 3.05 [95% CI, 1.32–7.06]). B, The distribution of the final eTICI grade in the PSM sample. In the PSM sample, the groups did not significantly differ with regard to the eTICI 2b–3 (OR 1.11 [95% CI, 0.99–1.25]). C, The distribution of the first pass to eTICI 2b, 2c, and 3 in the overall sample. No significant differences were noted between the groups with regard to the first-pass revascularization rates (for eTICI 2b–3, 2c–3, or 3). D, The distribution of the first pass to eTICI 2b, 2c, and 3 in the PSM sample. In the PSM sample, the rate of eTICI 2c–3 in the AT group was higher than that in the SRT group (OR 3.05 [95% CI, 1.00–3.93]).