Admission Blood Pressure and Outcome of Endovascular Therapy: Secondary Analysis of ASTER Trial.
2020
BACKGROUND Elevated blood pressure (BP) is common among patients presenting with acute ischemic stroke due to large vessel occlusions. The literature is inconsistent regarding the association between admission BP and outcome of mechanical thrombectomy (MT). Moreover, it is unclear whether the first line thrombectomy strategy (stent retriever [SR] versus contact aspiration [CA]) modifies the relationship between BP and outcome. METHODS This is a post hoc analysis of the ASTER (Contact Aspiration Versus Stent Retriever for Successful Revascularization) randomized trial. BP was measured prior to randomization in all included patients. Co-primary outcomes included 90-day functional independence (modified Rankin Scale [mRS] 0-2) and successful revascularization (modified Treatment in Cerebral Ischemia [mTICI] 2b-3). Secondary outcomes included symptomatic intracerebral hemorrhage (sICH) and parenchymal hemorrhage (PH) within 24 hours. RESULTS A total of 381 patients were included in the present study. Mean (SD) systolic BP (SBP) and diastolic BP (DBP) were 148 (26) mm Hg and 81 (16) mm Hg, respectively. There was no association between SBP or DBP and successful revascularization or 90-day functional independence. Similarly, there was no association between admission SBP or DBP with sICH or PH. Subgroup analysis based on the first-line thrombectomy strategy revealed similar results with no heterogeneity across groups. CONCLUSION Admission BP was not associated with functional, angiographic or safety outcomes. Results were similar in both CA and CA groups.
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