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Safety of urgent STA-MCA anastomosis after intravenous rt-PA treatment: a report of five cases and literature review.

Acta Neurochirurgica 2018 September
BACKGROUND: Intravenous recombinant tissue-type plasminogen activator (rt-PA) with/without endovascular treatment is not as effective in atherosclerotic steno-occlusive acute ischemic stroke. Urgent superficial temporal artery-middle cerebral artery (STA-MCA) anastomosis is effective to some extent in progressing stroke, but the safety of STA-MCA anastomosis soon after rt-PA therapy is unknown. Our aim was to clarify the safety of STA-MCA anastomosis within 24 h after intravenous rt-PA.

METHOD: From 2005 to 2015, rt-PA was administered to 225 patients presenting with acute ischemic stroke according to the Japanese Stroke Guidelines, in our institution. Five patients underwent urgent STA-MCA anastomosis after rt-PA administration with or without endovascular recanalization. Clinical time course, surgical complications, and patients' prognosis were investigated.

RESULTS: The average of patient age was 65.4 years (range 49-77 years); three patients had internal carotid artery occlusion, and two patients had middle cerebral artery occlusion. The median National Institutes of Health Stroke Scale score on admission was 12.4 (range 6-17 points) and operation occurred 10.6 h (range 5.3-23.6 h) after intravenous rt-PA administration. Hemostasis was achieved during standard STA-MCA anastomosis, and there were no hemorrhagic complications.

CONCLUSIONS: In our consecutive cases, urgent STA-MCA anastomosis after at least 5.3 h after intravenous rt-PA was performed safely without hemorrhagic complications.

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