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- W1969672216 abstract "Background. Residual blood flow around thrombus prior to treatment predicts success of coronary thrombolysis. The authors aimed to correlate the presence of residual flow signals in the middle cerebral artery (MCA) with completeness of recanalization after intravenous tissue plasminogen activator (TPA). Methods. The authors studied consecutive patients treated with intravenous TPA therapy who had a proximal MCA occlusion on pretreatment transcranial Doppler (TCD). Patients were continuously monitored for 2 hours after TPA bolus. Absent residual flow signals correspond to the thrombolysis in brain ischemia (TIBI) 0 grade, and the presence of residual flow signals was determined as TIBI 1-3 flow grades. Complete recanalization was defined as flow improvement to TIBI grades 4-5. Results. Seventy-five patients with a proximal MCA occlusion had median pre-bolus NIHSS 16 (85% with ≥10 points). TPA bolus was given at 141 ± 56 minutes (median 120 minutes). Complete recanalization was observed in 25 (33%), partial in 23 (31%), and no early recanalization was seen in 27 (36%) patients within 2 hours after TPA bolus. Only 19% with absent residual flow signals (TIBI grade 0, n= 26) on pretreatment TCD had complete early recanalization. If pretreatment TCD showed the presence of any residual flow (TIBI 1-3, n= 49), 41% had complete recanalization within 2 hours of TPA bolus (P = .03). Conclusions. Patients with detectable residual flow signals before IV TPA bolus are twice as likely to have early complete recanalization. Those with no detectable residual flow signals have less than 20% chance for complete early recanalization with intravenous TPA and may be candidates for intra-arterial therapies." @default.
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- W1969672216 date "2003-01-01" @default.
- W1969672216 modified "2023-09-26" @default.
- W1969672216 title "Residual Flow Signals Predict Complete Recanalization in Stroke Patients Treated With TPA" @default.
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- W1969672216 doi "https://doi.org/10.1111/j.1552-6569.2003.tb00153.x" @default.
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