Results from UNMASK EVT, an international multidisciplinary case based survey
| Case scenario | Physicians who would want to offer EVT (%)* |
| A 94-year-old left handed woman has arrived at your hospital at 2 AM with right hemiparesis and aphasia. Symptom onset was 3.5 hours ago. Her stroke severity, as measured by the NIHSS, is 12. ASPECTS on non-contrast CT is 7. Baseline CTA shows a proximal left M2 MCA segment occlusion | 67.2 |
| A 40-year-old right handed man has arrived at your hospital at 3 AM with right hemiparesis and left gaze deviation. Symptoms are 3 hours from onset. His stroke severity, as measured by the NIHSS, is 18. ASPECTS on non-contrast CT is 4. Baseline CTA shows a left ICA/T occlusion | 71.0 |
| A 76-year-old right handed woman has arrived at your hospital at 2 PM with mild hemiparesis and aphasia. Symptom onset was 3 hours ago. Her stroke severity, as measured by the NIHSS, is 2. ASPECTS on non-contrast CT is 10. Baseline CTA reveals a proximal M1 MCA segment occlusion. | 66.6 |
*EVT decision rate under assumed ideal conditions—that is, without any external (infrastructural, financial, etc) restraints.
ASPECTS, Alberta Stroke Program Early CT Score; CTA, CT angiography; EVT, endovascular therapy; ICA/T, internal carotid artery/terminal; MCA, middle cerebral artery; NIHSS, National Institutes of Health Stroke Scale.