CT Perfusion Imaging After Selection for Late-Window Endovascular Stroke Treatment: Secondary Analysis of the MR CLEAN-LATE Randomized Trial
Abstract
Importance
MR CLEAN-LATE (Multicenter Randomized Clinical Trial of Endovascular Treatment of Acute Ischemic Stroke in the Netherlands for Late Arrivals) showed efficacy of endovascular treatment (EVT) in the late window (6-24 hours after stroke symptom onset or time last seen well) among patients with ischemic stroke selected based on collateral flow. Therefore, the future role of computed tomography perfusion (CTP) imaging in patient selection for late-window EVT may change.
Objective
To investigate the interaction among CTP parameters (core volumes, penumbra volumes, and mismatch ratio) and the association of EVT with functional outcomes among patients in the late window after ischemic stroke selected based on collateral flow.
Design, Setting, and Participants
This is a post hoc secondary analysis of MR CLEAN-LATE, a multicenter randomized clinical trial, with open-label treatment and blinded end point, conducted from February 2, 2018, to January 27, 2022, in 18 Dutch stroke intervention centers. Participants included 502 patients with anterior circulation large vessel occlusion and present collateral flow on results of computed tomographic angiography in the late window after stroke, who gave deferred consent and were included in MR CLEAN-LATE. All patients had completed follow-up at 90 days. This secondary analysis included 313 patients (62%) with available CTP results. Statistical analysis was performed in September 2023.
Intervention
Patients were randomized to receive…
How strong is the evidence?
Evidence Hub reads this as a secondary / pooled analysis, done in people. Its evidence level is 3 of 5 (Moderate · trial / cohort / secondary analysis). Trials without a large randomized design, cohorts and secondary analyses give moderate evidence. Reported size: 502 participants or records.
Read the paper
Related studies
- Improving sleep quality leads to better mental health: A meta-analysis of randomised controlled trials
- Tocilizumab in patients with severe COVID-19: a retrospective cohort study
- A new aging measure captures morbidity and mortality risk across diverse subpopulations from NHANES IV: A cohort study
- Fruit, vegetable, and legume intake, and cardiovascular disease and deaths in 18 countries (PURE): a prospective cohort study
- Are noise and air pollution related to the incidence of dementia? A cohort study in London, England
- Long COVID symptoms and duration in SARS-CoV-2 positive children — a nationwide cohort study
Go deeper in Evidence Hub
Evidence Hub adds a study data sheet (design, sample size, evidence level, key numbers), an AI summary and a chat grounded in the paper's text.