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Ischemic core and hypoperfusion volumes predict infarct size in SWIFT PRIME.
Ischemic core and hypoperfusion volumes predict infarct size in SWIFT PRIME. Annals of neurology Albers, G. W., Goyal, M., Jahan, R., Bonafe, A., Diener, H., Levy, E. I., Pereira, V. M., Cognard, C., Cohen, D. J., Hacke, W., Jansen, O., Jovin, T. G., Mattle, H. P., Nogueira, R. G., Siddiqui, A. H., Yavagal, D. R., Baxter, B. W., Devlin, T. G., Lopes, D. K., Reddy, V. K., de Rochemont, R. d., Singer, O. C., Bammer, R., Saver, J. L. 2016; 79 (1): 76-89Abstract
Within the context of a prospective randomized trial (SWIFT PRIME), we assessed whether early imaging of stroke patients, primarily with computed tomography (CT) perfusion, can estimate the size of the irreversibly injured ischemic core and the volume of critically hypoperfused tissue. We also evaluated the accuracy of ischemic core and hypoperfusion volumes for predicting infarct volume in patients with the target mismatch profile.Baseline ischemic core and hypoperfusion volumes were assessed prior to randomized treatment with intravenous (IV) tissue plasminogen activator (tPA) alone versus IV tPA?+?endovascular therapy (Solitaire stent-retriever) using RAPID automated postprocessing software. Reperfusion was assessed with angiographic Thrombolysis in Cerebral Infarction scores at the end of the procedure (endovascular group) and Tmax?>?6-second volumes at 27 hours (both groups). Infarct volume was assessed at 27 hours on noncontrast CT or magnetic resonance imaging (MRI).A total of 151 patients with baseline imaging with CT perfusion (79%) or multimodal MRI (21%) were included. The median baseline ischemic core volume was 6ml (interquartile range?=?0-16). Ischemic core volumes correlated with 27-hour infarct volumes in patients who achieved reperfusion (r?=?0.58, p??6-second lesion volumes correlated with 27-hour infarct volume (r?=?0.78, p?=?0.005). In target mismatch patients, the union of baseline core and early follow-up Tmax?>?6-second volume (ie, predicted infarct volume) correlated with the 27-hour infarct volume (r?=?0.73, p?
View details for DOI 10.1002/ana.24543
View details for PubMedID 26476022