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• W4376137217 abstract "Introduction: High systolic blood pressure (SBP) is associated with poor functional outcome. We analysed whether the association of SBP with outcomes after endovascular treatment (EVT) is modified by prior intravenous thrombolysis (IVT). Patients and methods: This was a post-hoc analysis of MR CLEAN-NO IV, a randomised trial of IVT with alteplase followed by EVT versus EVT alone, within 4.5 h from stroke onset. SBP was recorded on hospital admission. The primary outcome was 90-day modified Rankin Scale (mRS) score and secondary outcomes included symptomatic intracranial haemorrhage (sICH) and successful reperfusion (eTICI 2b-3), analysed with (ordinal) logistic regression. Estimates were calculated per 10 mmHg change in SBP. We assessed whether IVT modified the associations of SBP with these outcomes using multiplicative interaction terms. Results: Of 539 randomised patients, 266 received IVT. The association of SBP with mRS score was J-shaped, with an inflection point at 150 mmHg. Using 150 mmHg as a reference point, SBPs higher than 150 mmHg were associated with poor functional outcome (acOR: 1.23, 95% CI: 1.09–1.38), but lower SBPs were not (acOR: 1.14, 95% CI: 0.99–1.30). Higher SBP was not associated with the risk of sICH (aOR: 1.09, 95% CI: 0.93–1.27) nor with the probability of successful reperfusion (aOR: 1.00, 95% CI: 0.91–1.10). Our main result was that we found no effect modification by IVT ( p-values for interaction, mRS = 0.94; sICH = 0.26; successful reperfusion = 0.58). Discussion and conclusion: There was no effect modification of IVT with SBP for any of the clinical outcomes. Therefore, the level of SBP (if ⩽185/110 mmHg) should not guide IVT decisions in patients otherwise eligible for both IVT and EVT within the 4.5-h time window. Trial registration: ISRCTN80619088, https://www.isrctn.com/ISRCTN80619088 ." @default.
• W4376137217 created "2023-05-12" @default.
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• W4376137217 date "2023-05-11" @default.
• W4376137217 modified "2023-10-16" @default.
• W4376137217 title "Admission blood pressure and clinical outcomes in patients with acute ischaemic stroke treated with intravenous alteplase and endovascular treatment versus endovascular treatment alone: A MR CLEAN-NO IV substudy" @default.
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• W4376137217 doi "https://doi.org/10.1177/23969873231173274" @default.
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