BackgroundThe development of unicentric pediatric acute stroke protocols has improved stroke diagnosis and treatment. The impact of the implementation of a multicentric Pediatric Stroke Code (PSC) remains unknown. Aimto describe the characteristics of the PSC activations and identify clinical features associated with stroke compared to stroke mimics in children in whom a multicentric PSC had been activated and compare them to reported monocentric PSC results. MethodsObservational, retrospective, case and control multicentric study, performed in the Pediatric Emergency Department (PED) of the three Primary Pediatric Stroke Centers (PPSCs) in Madrid (Spain). Study population corresponded to children between 28 days and 16 years old in whom PSC was activated that consulted or were referred to any of the PPSC PED between March 2019 and June 2022. The main outcome was to compare the characteristics of patients with final diagnosis of stroke versus stroke mimics, among all patients for which PSC had been activated. Logistic regression modeling was used to investigate associations between independent variables and stroke diagnosis. Odds ratio (ORs) and 95 % confidence intervals (95%CIs) were estimated. ResultsPSC was activated in 196 patients. Stroke was confirmed in 39 patients (19.9 %): 20 (10.2 %) had an ischemic stroke and 19 (9.7 %) a hemorrhagic stroke. Stroke mimics represented 80.1 % of the PSC activations. Migraine was the most frequent stroke mimic (38.3 %). Time from symptom onset to brain imaging was 233.00 min (IQR 153.00–373.00) when patients self-presented at the PPSC compared to 231.00 min (IQR 129.00–400.00) when PSC was triggered at other settings (p0.580). Five patients (25.3 %) were eligible for hyperacute recanalization treatment. Low level of consciousness (OR4.373, 95%IC 0.247–0.652, p < 0.001), sensory disruption/motor disability of face/limbs (OR3.633, 95%IC 0.103–0.349, p < 0.001), aphasia (OR2.311, 95%IC 0.023–0.284, p0.022) and altered mental status (OR2.517, 95%IC 0.043–0.357, p0.013) were associated with an increased probability of stroke. Conclusionmulticentric PSC achieved similar results to previously reported unicentric PSCs, showing the feasibility of such an organization.