Benefits of the Stroke Emergency Mobile for Patients with Large Vessel Oc-clusions of the Anterior Circulation

Background & Purpose: Endovascular techniques for recanalization of large vessel occlusions (LVO) are being perfected constantly, meanwhile clinicians strive to optimize preclinical and clinical stroke protocols. In 2011 a Stroke Emergency Mobile (STEMO) was established in Berlin (Germany), enabling preclinical cranial computed tomographies (cCT) with angiography and preclinical i. v. thrombolysis. (1) Specialized neuroradiologies can be targeted in cases of LVO. (2) Studies proved that the STEMO reduces alarm-to-thrombolysis times significantly (3) and suggest that ultra-early i. v. thrombolysis might be associated with an improved functional outcome (4). Subgroup analysis of patients with LVO have not been reported. This study aims to analyze the effect of a STEMO on door-to-groin times in patients with LVO before thrombectomy. Methods: Retrospective cohort-study of door-to-groin times in patients with LVO of the anterior circulation transported via STEMO and patients transported with conventional ambulances during 05/2017 und 12/2019. Results: 140 patients were included in this analysis. 14 patients (10%) where transported via STEMO. Mean age was 71.4 years (SD = 13.8) in the STEMO group and 73.1 years (SD = 14) in the non-STEMO group. Both groups included 50% female and male patients. Mean door-to-groin time was significantly lower in the STEMO group (33.4 min, SD = 11.8 min vs. 89.3 min, SD = 39.3 min; p < 0.001, Fig. 1). Conclusion: Introduction of a STEMO can reduce door-to-groin times in patients with LVO significantly. Further evaluation of this subgroup of patients is in progress to clarify weather neurological outcomes benefit from these preclinical processes as well.