TY - JOUR
T1 - Late secondary ischemic injury in patients receiving intraarterial thrombolysis
AU - Kidwell, Chelsea S.
AU - Saver, Jeffrey L.
AU - Starkman, Sidney
AU - Duckwiler, Gary
AU - Jahan, Reza
AU - Vespa, Paul
AU - Pablo Villablanca, J.
AU - Liebeskind, David S.
AU - Gobin, Y. Pierre
AU - Vinuela, Fernando
AU - Alger, Jeffry R.
PY - 2002/12/1
Y1 - 2002/12/1
N2 - Although animal models have demonstrated that late secondary cerebral injury after arterial occlusion and subsequent recanalization may limit the benefit of reperfusion therapy, this phenomenon has not been well characterized in humans. Diffusion-perfusion magnetic resonance imaging studies were performed before treatment, early after treatment, and at day 7 in patients undergoing vessel recanalization with intraarterial thrombolytics. Among 18 patients studied, mean age was 71 (range, 27-94), and median entry National Institutes of Health Stroke Scale score was 13 (range, 6-25). Early after recanalization, partial or complete normalization of diffusion imaging abnormalities occurred in 8 of 18 (44%) patients. Among the eight patients with early diffusion imaging reversal, late secondary injury by day 7 occurred in 5 (63%), and sustained normalization of all reversed tissue occurred in 3 (38%). Pretreatment apparent diffusion coefficient values were lowest in regions experiencing no reversal (mean apparent diffusion coefficient, 608μm2/sec), intermediate in regions with reversal and secondary decline (617μm2/sec), and highest in regions with sustained reversal (663μm2/sec). There was a trend toward less improvement in neurological deficit in patients with secondary injury versus patients with sustained reversal. In the future, late secondary tissue injury may become an important therapeutic target for postreperfusion neuroprotective therapies, with treatment efficacy monitored by serial diffusion magnetic resonance imaging.
AB - Although animal models have demonstrated that late secondary cerebral injury after arterial occlusion and subsequent recanalization may limit the benefit of reperfusion therapy, this phenomenon has not been well characterized in humans. Diffusion-perfusion magnetic resonance imaging studies were performed before treatment, early after treatment, and at day 7 in patients undergoing vessel recanalization with intraarterial thrombolytics. Among 18 patients studied, mean age was 71 (range, 27-94), and median entry National Institutes of Health Stroke Scale score was 13 (range, 6-25). Early after recanalization, partial or complete normalization of diffusion imaging abnormalities occurred in 8 of 18 (44%) patients. Among the eight patients with early diffusion imaging reversal, late secondary injury by day 7 occurred in 5 (63%), and sustained normalization of all reversed tissue occurred in 3 (38%). Pretreatment apparent diffusion coefficient values were lowest in regions experiencing no reversal (mean apparent diffusion coefficient, 608μm2/sec), intermediate in regions with reversal and secondary decline (617μm2/sec), and highest in regions with sustained reversal (663μm2/sec). There was a trend toward less improvement in neurological deficit in patients with secondary injury versus patients with sustained reversal. In the future, late secondary tissue injury may become an important therapeutic target for postreperfusion neuroprotective therapies, with treatment efficacy monitored by serial diffusion magnetic resonance imaging.
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U2 - 10.1002/ana.10380
DO - 10.1002/ana.10380
M3 - Article
C2 - 12447922
AN - SCOPUS:0036895552
SN - 0364-5134
VL - 52
SP - 698
EP - 703
JO - Annals of Neurology
JF - Annals of Neurology
IS - 6
ER -