Baseline demographics, diagnosis, and treatment times
| RACE alerts (N=109) | Stroke alerts (N=142) | p Value | |
|---|---|---|---|
| Median age (IQR) | 72.5 (61–81) | 65 (55–79) | 0.02 |
| Gender (female (%)) | 61 (56.0) | 71 (50) | 0.3 |
| Median NIHSS (IQR) | 12 (7–18) | 5 (2–10) | <0.05 |
| Median RACE score (IQR) | 6 (5–8) | NA | |
| Diagnosis, N (%) | <0.05 | ||
| Ischemic stroke | 57 (52.3) | 44 (30.1) | |
| ICH | 12 (11) | 8 (5.6) | |
| Seizures | 19 (17.4) | 14 (9.9) | |
| TIA | 7 (6.4) | 23 (16.2) | |
| Encephalopathy | 6 (5.5) | 12 (8.3) | |
| Others | 8 (7.3) | 41 (28.9) | |
| Disposition from ER (N (%)) | |||
| ICU | 68 (62.4) | 56 (39.4) | <0.05 |
| Step-down unit | 37 (33.9) | 86 (60.6) | <0.05 |
| Hospice | 4 (3.7) | 0 | |
| IV tPA (N (%)) | 28 (25.7) | 18 (12.7) | <0.05 |
| Times (min), median (IQR) | |||
| 911 Dispatch to ER | 31 (22–38) | 32 (20–51) | 0.06 |
| Door to CT completion | 10 (5–16) | 28 (20–41) | <0.05 |
| Door to tPA | 46 (28–55) | 75 (60–95) | <0.05 |
| Mechanical thrombectomy, N (%) | 22 (20.2) | 11 (7.7) | 0.03 |
| Times (min), median (IQR) | |||
| Onset to arrival | 71 (37–560) | 128 (91–207) | 0.3 |
| Arrival to CT | 8.5 (6–15) | 15 (7–17) | 0.3 |
| Arrival to puncture | 68 (60–93) | 128 (101–142) | 0.04 |
| Arrival to recanalization | 101 (88–118) | 205 (131–218) | 0.001 |
| IV tPA+MT, N (%) | 13 (59.1) | 7 (63.6) | 0.3 |
| Occlusion site, N (%) | |||
| ICA terminus | 6 (26.1) | 3 (27.3) | 0.7 |
| MCA | 13 (56.5) | 6 (54.5) | 0.9 |
| Only MCA M2 | 2 (8.7) | 2 (18.2) | 0.6 |
| Tandem | 2 (8.7) | 0 | |
| 90-Day MT outcome, N (%) | |||
| mRS 0–2 | 11 (50) | 4 (36.4) | 0.3 |
| Mortality | 3 (14.3) | 3 (27.2) | 0.1 |
ER, emergency room; ICA, internal carotid artery; ICH, intracerebral hemorrhage; ICU, intensive care unit; MCA, middle cerebral artery; mRS, modified Rankin Scale score; MT, mechanical thrombectomy; NIHSS, National Institutes of Health Stroke Scale; RACE, Rapid Arterial oCclusion Evaluation; TIA, transient ischemic attack; tPA, tissue plasminogen activator.