Relationship Between Baseline Infarct and Clinical Outcome in Pediatric Large‐Vessel Occlusion Ischemic Stroke

Author:

Bhatia Kartik D.1ORCID,Parra‐Farinas Carmen2,Pulcine Elizabeth3,Dlamini Nomazulu3,Andrews Ian4,Gupta Sachin15,Webster Richard15,Troedson Christopher15,Dale Russell C.15,Worthington John6,Tastula Kylie6,Ang Timothy6,Cheung Andrew7,Manning Nathan7,Miteff Ferdinand8,Miteff Christina9,Muthusami Prakash2

Affiliation:

1. Children's Hospital at Westmead Clinical School University of Sydney Sydney New South Wales Australia

2. Division of Paediatric Interventional Neuroradiology Hospital for Sick Children Toronto Ontario Canada

3. Division of Neurology Hospital for Sick Children Toronto Ontario Canada

4. Department of Neurology Sydney Children's Hospital Randwick New South Wales Australia

5. T.Y. Nelson Department of Neurology and Neurosurgery Children's Hospital at Westmead Westmead New South Wales Australia

6. Department of Neurology Royal Prince Alfred Hospital Camperdown New South Wales Australia

7. Division of Interventional Neuroradiology Prince of Wales Hospital Randwick New South Wales Australia

8. Department of Neurology John Hunter Hospital New Lambton Heights New South Wales Australia

9. Department of Neurology John Hunter Children's Hospital New Lambton Heights New South Wales Australia

Abstract

Background In adults with large‐vessel occlusion stroke, the extent of the baseline infarct measured using the Alberta Stroke Program Early Computed Tomography Score (ASPECTS) predicts outcome and is used during patient selection for mechanical thrombectomy. The relationship between ASPECTS and clinical outcome is unknown in pediatric large‐vessel occlusion stroke. Methods Secondary analysis of a retrospective multicenter case–control study assessing mechanical thrombectomy versus medical management alone for pediatric large‐vessel occlusion stroke across 5 centers in Australia and Canada from 2011 to 2022. ASPECTS was measured on baseline computed tomography or magnetic resonance imaging–diffusion‐weighted imaging while blinded to clinical outcome and treatment status. The relationship between ASPECTS and pediatric modified Rankin scale scores at 3 months following stroke was assessed using ordinal logistic regression. Results In total, n = 24 thrombectomy patients (F = 10, mean age, 11.3 years [SD, 4.36]) and n = 24 control patients (F = 10, mean age, 10.2 years [SD, 4.32) were included. Mean ASPECTS was 6.3 (SD, 2.37) in the thrombectomy group and 6.1 (SD, 2.64) in the control group. In patients undergoing thrombectomy, baseline ASPECTS significantly correlated with pediatric modified Rankin scale scores at 3 months (odds ratio, 1.58 [95% CI, 1.10–2.27]; P  = 0.013). In control patients, there was no significant correlation (odds ratio, 1.17 [95% CI, 0.87–1.55]; P  = 0.298). Six of 7 thrombectomy patients with a large baseline infarct (ASPECTS <6) had a pediatric modified Rankin scale score of 0 to 2 at final follow‐up. Conclusion Baseline ASPECTS was significantly associated with clinical outcome in pediatric patients with large‐vessel occlusion stroke who received mechanical thrombectomy. Thrombectomy patients with low ASPECTS demonstrated favorable long‐term outcomes, suggesting ASPECTS alone should not be used to exclude pediatric patients from receiving thrombectomy.

Publisher

Ovid Technologies (Wolters Kluwer Health)

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