Mode of Imaging Study and Endovascular Therapy for a Large Ischemic Core: Insights From the RESCUE-Japan LIMIT
- Author:
Fumihiro SAKAKIBARA
1
;
Kazutaka UCHIDA
;
Shinichi YOSHIMURA
;
Nobuyuki SAKAI
;
Hiroshi YAMAGAMI
;
Kazunori TOYODA
;
Yuji MATSUMARU
;
Yasushi MATSUMOTO
;
Kazumi KIMURA
;
Reiichi ISHIKURA
;
Manabu INOUE
;
Kumiko ANDO
;
Atsushi YOSHIDA
;
Kanta TANAKA
;
Takeshi YOSHIMOTO
;
Junpei KOGE
;
Mikiya BEPPU
;
Manabu SHIRAKAWA
;
Takeshi MORIMOTO
;
Author Information
- Publication Type:Original Article
- From:Journal of Stroke 2023;25(3):388-398
- CountryRepublic of Korea
- Language:English
-
Abstract:
Background:and Purpose Differences in measurement of the extent of acute ischemic stroke using the Alberta Stroke Program Early Computed Tomographic Score (ASPECTS) by non-contrast computed tomography (CT-ASPECTS stratum) and diffusion-weighted imaging (DWI-ASPECTS stratum) may impact the efficacy of endovascular therapy (EVT) in patients with a large ischemic core.
Methods:The RESCUE-Japan LIMIT (Recovery by Endovascular Salvage for Cerebral Ultra-acute Embolism Japan–Large IscheMIc core Trial) was a multicenter, open-label, randomized clinical trial that evaluated the efficacy and safety of EVT in patients with ASPECTS of 3–5. CT-ASPECTS was prioritized when both CT-ASPECTS and DWI-ASPECTS were measured. The effects of EVT on the modified Rankin Scale (mRS) score at 90 days were assessed separately for each stratum.
Results:Among 183 patients, 112 (EVT group, 53; No-EVT group, 59) were in the CT-ASPECTS stratum and 71 (EVT group, 40; No-EVT group, 31) in the DWI-ASPECTS stratum. The common odds ratio (OR) (95% confidence interval) of the EVT group for one scale shift of the mRS score toward 0 was 1.29 (0.65–2.54) compared to the No-EVT group in CT-ASPECTS stratum, and 6.15 (2.46–16.3) in DWI-ASPECTS stratum with significant interaction between treatment assignment and mode of imaging study (P=0.002). There were significant interactions in the improvement of the National Institutes of Health Stroke Scale score at 48 hours (CT-ASPECTS stratum: OR, 1.95; DWIASPECTS stratum: OR, 14.5; interaction P=0.035) and mortality at 90 days (CT-ASPECTS stratum: OR, 2.07; DWI-ASPECTS stratum: OR, 0.23; interaction P=0.008).
Conclusion:Patients with ASPECTS of 3–5 on MRI benefitted more from EVT than those with ASPECTS of 3–5 on CT.
