EVT decision rates for M2 segment MCA occlusion case scenarios
| Case Vignette | EVT | ||
|---|---|---|---|
| Evidence Level | Rate under Current Local Resources (%) | Rate under Assumed Ideal Conditions (%) | |
| An 88-year-old, right-handed man has arrived at your hospital at 10:00 am with right hemiparesis and aphasia; symptom onset was 3 hours ago; his stroke severity measured by NIHSS is 14; ASPECTS on noncontrast CT is 7; baseline CTA reveals a proximal left M2 segment MCA occlusion | 2B | 81.6 | 85.9 |
| A 45-year-old, left-handed man has arrived at your hospital at 1:00 pm with left hemiparesis and visual field defect; he was last seen as normal 12 hours ago; his stroke severity measured by NIHSS is 15; ASPECTS on noncontrast CT is 8; baseline CTA shows a proximal right M2 segment MCA occlusion | 2B | 68.7 | 75.3 |
| A 94-year-old, left-handed woman has arrived at your hospital at 2:00 am with right hemiparesis and aphasia; symptom onset was 3.5 hours ago; her stroke severity measured by NIHSS is 12; ASPECTS on noncontrast CT is 7; the baseline CTA shows a proximal left M2 segment MCA occlusion | 2B | 60.3% | 67.2% |
| An 85-year-old, right-handed woman has arrived at your hospital at 11:00 pm with left hemiparesis; symptoms are 3 hours from onset; her stroke severity as measured by NIHSS is 9; ASPECTS on noncontrast CT is 6; baseline CTA shows a proximal right M2 segment MCA occlusion; she has a history of mild cognitive impairment | 2B | 62.3 | 63.4 |
| A 56-year-old, right-handed man has arrived at your hospital at 3:00 pm with global aphasia; symptoms are 3 hours from onset; his stroke severity measured by NIHSS is 8; ASPECTS on noncontrast CT is 9; baseline CTA reveals a small-branch left M2 segment MCA occlusion | 2B | 53.8 | 56.4 |