Baseline characteristics of patients in study stratified by collateral status (n = 84)
| Good Collaterals (rLMC Score 17–20, n = 19) | Intermediate Collaterals (rLMC Score 11–16, n = 34) | Poor Collaterals (rLMC Score 0–10, n = 31) | P Value | |
|---|---|---|---|---|
| Age, y, median (range) | 63 (26–78) | 66 (40–85) | 70 (45–89) | .15 |
| Sex, male, % | 52.6% | 58.8% | 45.2% | .55 |
| Baseline NIHSS score, median (range) | 10 (5–25) | 13 (4–23) | 18 (8–25) | <.01 |
| Baseline ASPECTS, median (range) | 8 (3–10) | 8 (3–10) | 5 (1–10) | <.01 |
| Onset to baseline MRI time, min, median (range) | 166 (68–724) | 176.5 (55–493) | 148 (36–334) | .06 |
| Baseline infarct volume, mL (±1 SD) | 12.6 (13.2) | 37.1 (32.1) | 110.1 (75.1) | <.01 |
| IV tPA (%) | 52.6% | 55.9% | 48.4% | .72 |
| Recanalization, %, TICI 2b–3 | 31.6% | 50% | 29% | .2 |
| Onset to recanalization, min,a n = 32, median (range) | 400 (295–766) | 360 (160–620.5) | 290 (157–323) | .01 |
| Infarct growth, mL (±1 SD) | 42.1 (52.1) | 37.6 (54.8) | 90.9 (86.7) | <.01 |
↵a In recanalizers alone (n = 32).