Abstract WP171: Impact Of Pre-stroke Sulfonylurea Use On Functional Outcomes In The SHINE Trial

Background: Pharmacological and clinical evidence suggest that sulfonylurea (SU) medications may improve acute ischemic stroke (AIS) outcomes. The SHINE trial studied intensive vs standard blood sugar management in patients presenting with AIS and hyperglycemia. We investigated whether pre-existing SU use impacted functional outcomes in SHINE. Methods: SHINE data collection forms were reviewed to identify AIS patients taking SUs at the time of study enrollment. Our primary outcome compared the adjusted 90-day utility weighted modified Rankin Scale (UW-mRS) score in the SU and non-SU cohorts. The UW-mRS score was adjusted for age, baseline NIHSS, baseline glucose, and reperfusion therapy. Pre-specified analyses of the 90-day UW-mRS scores assessed for heterogeneity of SU effect across the following subgroups: age, stroke severity, reperfusion therapy, type of SU, and SHINE study arm. Results: In total, 1066 SHINE subjects with a final diagnosis of AIS were included (SU=248 [23.3%], non-SU=818 [76.7%]). Baseline demographics were generally similar (Table 1). Calculated 90-day mean UW-mRS score were higher in the non-SU group compared to the SU group: mean 0.617 ± 0.012 versus mean 0.566 ± 0.022 (Diff 0.051, 95% CI 0.001-0.1) without heterogeneity of treatment effect (Figure 1). Conclusion: Contrary to our hypothesis and published literature, our retrospective analysis of the SHINE trial demonstrated better functional outcomes in the non-SU cohort. This may be due to selection bias with inadequate controlling for baseline risk factors present in the SU cohort. Definitive prospective studies are required.