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  • Title: Efficacy of peripheral interventional radiologists performing endovascular stroke therapy guided by CT perfusion triage of patients.
    Author: Burkart DJ, Day JS, Henderson K, Borsa JJ.
    Journal: J Vasc Interv Radiol; 2013 Sep; 24(9):1267-72. PubMed ID: 23830912.
    Abstract:
    PURPOSE: To assess safety and efficacy of intraarterial mechanical thrombectomy for treatment of ischemic stroke in a community hospital by peripheral interventional radiologists employing computed tomography (CT) perfusion imaging for patient selection. MATERIALS AND METHODS: Forty patients, 11 men (27.5%) and 29 women (72.5%), were treated between February 2008 and October 2011. Eligible patients had a National Institutes of Health Stroke Scale (NIHSS) score greater than 8 and diagnosis of large-vessel ischemic stroke by head CT angiogram, and met previously reported CT perfusion imaging triage criteria. RESULTS: The baseline NIHSS score was 18.0 ± 7.9 (range, 8-35). Sixteen patients (40%) had a baseline NIHSS score greater than 20. Symptom onset was unknown in five patients. Symptom onset to device time in the remaining 35 patients was 254.8 minutes ± 150.9 (range, 75-775 min). A total of 65% of patients showed thrombolysis in cerebral infarction (TICI) 2a, 2b, or 3 flow following the procedure. Symptomatic intracranial hemorrhage was seen in four patients (10.0%). At 90 days, 32 patients (80%) were alive and eight (20%) had died. The modified Rankin scale (mRS) score at 90 days was no more than 2 in 20 patients (50.0%). The mean mRS score at 90 days was 2.9 ± 2.0 (range, 0-6). NIHSS score at 90 days was 5.1 ± 6.1 (range, 0-24). In patients with successful recanalization (ie, TICI 2 or 3 flow), a good clinical outcome (ie, mRS score ≤ 2) was achieved in 65.3% of patients (mean, 2.4 ± 1.9; range, 0-6), and 90-day mortality rate was 15.4%, compared with 28.6% in patients with TICI 0/1 flow. CONCLUSIONS: Peripheral interventional radiologists who use CT perfusion imaging for patient triage can have good neurologic outcomes and provide sustainable, safe, and complete around-the-clock coverage for endovascular stroke treatment.
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