Emergency Stroke Unit for Acute Cerebrovascular Events ( ESU-ACE-B )

Emergency Stroke Unit for Acute Cerebrovascular Events--A Prospective, Multicenter, Week-wise Randomized, Controlled Trial ( ESU-ACE-B )

To compare the door-to-puncture time of patients with hyperacute ischemic stroke (between 4.5-6 hours after the onset of symptoms) treated in a standard stroke unit adherent to guidelines versus treated in Emergency Stroke Unit (a new stroke unit based on low-field magnetic resonance imaging).

Mechanical thrombectomy is an effective reperfusion therapy for patients with acute ischemic stroke due to large vessel occlusion. Faster door-to-puncture time (DPT) is associated with significantly better clinical outcomes. With the development of low-field magnetic resonance imaging, it is poised to play an increasingly significant role in the early diagnosis and management of acute ischemic stroke. This prospective, multicenter, week-wise randomized controlled trial will compare the door-to-puncture time of patients with hyperacute ischemic stroke (between 4.5-6 hours after the onset of symptoms) managed in a standard stroke unit adherent to guidelines versus managed in Emergency Stroke Unit (a new stroke unit based on low-field magnetic resonance imaging).

Inclusion Criteria:

1. Age ≥ 18 years;
2. Can be treated between 4.5-6 hours of symptoms onset*(*Symptom onset is defined by the "last seen normal" principle);
3. Presenting with ischemic stroke symptoms;
4. Pre-stroke mRS score 0-1;
5. Baseline NIHSS score ≥ 5;
6. Eligible for endovascular thrombectomy;
7. Informed consent signed.

Exclusion Criteria:

1. Baseline NIHSS score < 5;
2. Unable to undergo MRI because of claustrophobia;
3. Patients with cardiac pacemaker/brain pacemaker/insulin pump implantation;
4. Definite contraindication for endovascular thrombectomy;
5. Patients with postictal hemiparesis (Todd's paralysis) or those with concomitant neurological/psychiatric conditions who are unable or unwilling to cooperate;
6. Pregnant women, nursing mothers, or reluctance to use effective contraceptive measures during the period of trial;
7. Participation in other interventional randomized clinical trials within 3 months before enrollment;
8. Patients deemed unsuitable for participation in this trial by the investigator or those for whom participation in this trial may result in greater risks.