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- W3011569516 abstract "To evaluate the relationship between delay to computed tomography perfusion and estimated core infarct volumes in patients with large vessel occlusion (LVO). A retrospective registry of consecutive adults >18 years old who underwent CTP in clinical practice for suspected LVO within 24 h of LKN at 3 academic hospitals was queried (06/2017 – 12/2017). CT and CTP findings were compared over time as a continuous variable, and dichotomized by ≤6 h or 6−24 h from LKN. Of 410 screened patients, 75 had LVO, of whom 60 (14.6 %) met inclusion criteria (median age 78y [IQR 64–84], 36 were female [60 %]), and 39 (65.0 %) underwent thrombectomy. Thirty (50 %) presented in the extended window (6−24 h) and had lower ASPECTS scores compared to patients in the early window (median 7 vs. 9, p < 0.01). Perfusion core (rCBF <30 %) volumes were similar (median 8 vs. 25, p = 0.10). After adjustment for age, NIHSS, and thrombolysis, there was a trend for lower ASPECTS for every hour after LKN (proportional OR 0.92, 95 %CI 0.84–1.00, p = 0.06), but no change in perfusion core (p = 0.37) or Tmax>6 s volumes (p = 0.29), or mismatch ratios (p = 0.48) after adjusting for age, NIHSS, ASPECTS, and thrombolysis. As time progresses in anterior LVO, the unenhanced CT is more sensitive than CTP for detecting irreversibly damaged tissue. These results underscore the importance of carefully reviewing the unenhanced and perfusion CT when considering a patient for thrombectomy." @default.
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- W3011569516 date "2020-07-01" @default.
- W3011569516 modified "2023-10-16" @default.
- W3011569516 title "Mismatch between automated CTP and ASPECTS score in patients with anterior large vessel occlusion" @default.
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- W3011569516 doi "https://doi.org/10.1016/j.clineuro.2020.105797" @default.
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