Baseline patient characteristicsa
| Variables | Fast Retrieval (n = 31) | Slow Retrieval (n = 37) | P Value |
|---|---|---|---|
| Demographics | |||
| Age (yr) | 77 (57.5–83.7) | 65 (49–75.7) | .10 |
| Women | 20 (64.5%) | 19 (51.4%) | .28 |
| Medical history | |||
| Smoking | 7 (22.6%) | 13 (35.1%) | .26 |
| Hypertension | 19 (61.3%) | 22 (59.5%) | .88 |
| Diabetes mellitus | 7 (22.6%) | 8 (21.6%) | .92 |
| Dyslipidemia | 12 (38.7%) | 12 (32.4%) | .59 |
| Cardiovascular events | 9 (29.0%) | 11 (29.7%) | .95 |
| Clinical data at presentation | |||
| NIHSS | 17 (13.25–19.75) | 17 (14–20) | .94 |
| Serum glucose level (mmol/L)b | 7.5 (5.9–8.7) | 6.8 (5.7–9.5) | .92 |
| Intravenous thrombolysis | 16 (51.6%) | 26 (70.3%) | .12 |
| Imaging data | |||
| DWI-ASPECTS | 6 (6–8) | 7 (5–8.25) | .47 |
| Left cerebral territory | 10 (32.3%) | 19 (51.4%) | .12 |
| Occlusion site | .50 | ||
| ICA-L | 4 (12.9%) | 5 (13.5%) | |
| M1 | 24 (77.4%) | 25 (67.6%) | |
| M2 | 3 (9.7%) | 7 (18.9%) | |
| Stroke etiology | .76 | ||
| Large-artery atherosclerosis | 4 (12.9%) | 7 (18.9%) | |
| Cardioembolism | 10 (32.3%) | 11 (29.7%) | |
| Other known etiology | 3 (9.7%) | 2 (5.4%) | |
| Unknown | 14 (45.2%) | 17 (45.9%) | |
| Angiographic data | |||
| Symptom onset to thrombectomy (min) | 254.5 (184–295) | 230.5 (189.5–310.5) | .90 |
| Good collaterals (ASITN/SIR 3–4) | 10 (32.3%) | 18 (48.6%) | .37 |
| Balloon-guided catheter | 2 (6.5%) | 3 (8.1%) | 1 |
Note:—ASITN/SIR indicates American Society of Interventional and Therapeutic Neuroradiology/Society of Interventional Radiology.
↵a Continuous variables are described as median and interquartile range, and categoric variables, as number and percentage.
↵b Missing data for 13 and 10 patients, respectively.