Table 1.

EVT priority of transfer based on disease entity.

Category	Timeline	Disease entity
Priority 1	Immediate: Acute life- threatening condition or acute transfer within 6 h	Acute ischemic stroke (AIS)
Priority 2	Within 24 h: Loss of life or significant function that can be saved	Coiling or clipping of a ruptured saccular aneurysm with SAH Craniotomy or embolization of a ruptured AVM with prenidal/nidal aneurysms Decompressive craniectomy or hematoma evacuation*
1. If there is not a high risk for in-hospital mortality (inferred from mortality and prognosis assessment scales such as SOFA)
Priority 3	Within 1 week: Life or significant functional loss that can be saved by intervention within 1 week	Complex ruptured intracranial aneurysm requiring special preparation or equipment
Priority 4	Within 1 month: Life or significant functional loss that can be saved by intervention within 1 month	1. Ruptured AVM with no nidal aneurysms 2. High-grade dural AV fistulae with ICH 3. Carotid revascularization (endarterectomy or stenting) for symptomatic carotid stenosis
Priority 5	After the COVID-19 pandemic	Any other pathology with non-hemorrhagic or ischemic presentation, with a strong recommendation to address risk factors and provide continuous surveillance