RT Journal Article SR Electronic T1 Comparison of Stent-Retriever Devices versus the Merci Retriever for Endovascular Treatment of Acute Stroke JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 366 OP 372 DO 10.3174/ajnr.A3195 VO 34 IS 2 A1 E. Broussalis A1 E. Trinka A1 W. Hitzl A1 A. Wallner A1 V. Chroust A1 M. Killer-Oberpfalzer YR 2013 UL http://www.ajnr.org/content/34/2/366.abstract AB BACKGROUND AND PURPOSE: Revascularization of large cerebral artery occlusion is the therapeutic goal in stroke therapy. Currently, many recanalization devices are in clinical use. This study compares the outcome parameters, efficacy, and safety of the new generation of stent-retriever devices with the well-established Merci retriever. MATERIALS AND METHODS: All patients who received endovascular mechanical recanalization therapy were prospectively registered. One hundred twenty-two patients were treated with either new stent retrievers, including the Trevo and Solitaire devices, or the Merci retriever system. Recanalization of the occluded vessel was assessed in accordance with the modified TICI score, and outcome parameters, including the NIHSS and mRS scores, were documented. Clinical status was recorded after neurointervention, at time of discharge, and after 90 days. RESULTS: The mean age of all patients was 68 years; 54% were male, with no statistical differences in demographics between both groups. Successful recanalization (TICI 3 and TICI 2b) was achieved in 82% of patients treated with stent retrievers compared with 62% of patients treated with Merci retrievers (P = .016). In the 90-day follow-up, 65% of patients treated with stent retrievers and 35% of those treated with the Merci had achieved a good (mRS = 0–2) clinical outcome (P = .002). Patients treated with stent retrievers had a significantly shorter treatment time (72 versus 122 minutes, P < .01) and less severe intracerebral hemorrhages (10% versus 28%, P < .01). CONCLUSIONS: Patients treated with Trevo and Solitaire stents had a better revascularization rate, better clinical outcome, and lower complication rate than patients treated with the Merci retriever. BAbasilar arteryEMRendovascular mechanical recanalizationIATintra-arterial thrombolysisICHintracerebral hemorrhageIVTintravenous thrombolysisMERCIMechanical Embolus Removal in Cerebral IschemiamRSmodified Rankin ScaleTICIThrombolysis in Cerebral Infarction