Abstract Number: Esoc2026ot97 Impact of Prehospital Notification and Shift Type on Door-to-Needle and Onset-to-Needle Times in a Developing Stroke Care System

Abstract Background and aims Door-to-Needle Time (DNT) and Onset-to-Needle Time (ONT) are established quality indicators in acute ischemic stroke care. Organizational factors such as prehospital notification and shift type may influence treatment delays. Methods To evaluate the association between prehospital notification and DNT/ONT, and to assess differences in these time metrics between day and night shifts. Results A retrospective observational study was conducted using anonymized routinely collected data. Associations between prehospital notification and DNT/ONT were assessed using Spearman’s rank correlation. Differences between day and night shifts were analyzed using Welch’s independent samples t-test. Conclusions Prehospital notification was significantly associated with shorter DNT (ρ = 0.46, p 0.001), whereas no significant association was observed with ONT (ρ = 0.13, p = 0.146). No statistically significant differences were identified between day and night shifts for DNT (p = 0.457) or ONT (p = 0.206). Conflict of interest