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Single-Center Experience Using the 3MAX Reperfusion Catheter for the Treatment of Acute Ischemic Stroke with Distal Arterial Occlusions
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International audience. PURPOSE : Most recent guidelines recommend the use of stent retriever devices in endovascular treatment of acute ischemic stroke with large vessel occlusion (LVO). Recently published data reported convincing results with thromboaspiration devices such as the Penumbra System (Penumbra, Alameda, CA, USA) combined with supple reperfusion catheters by using the ADAPT (A Direct Aspiration First-Pass Thrombectomy) technique. The aim of this study was to report our initial experience with the 3MAX (3.8 F) reperfusion catheter for the recanalization of distal intracranial arteries.METHODS : From August 2015 to December 2016, 32 consecutive patients (16 females, 50%; mean age = 67.4 ± 18.7 years, range: 22-91) for 38 distal occlusions underwent mechanical thrombectomy (MT) by thromboaspiration using the 3MAX. Median NIHSS score at admission was 14 (IQR: 9-19). Distal occlusions were distributed as follows: M2 (n: 23), M3 (n: 6), P1 (n: 3), P2 (n: 2), P3 (n: 2), A3 segment (n: 1) and superior cerebellar artery (n: 1).RESULTS : In 1/38 (2.6%) target artery, the 3MAX could not be navigated. Of the 37 (59.5%) remaining arteries, 22 were successfully reperfused (TICI 2b/3) after ADAPT with the 3MAX alone. Additional stent retriever thrombectomy allowed a 76.3% final reperfusion rate. Good functional outcome (mRS ≤2) was obtained in 45.5% of patients at 3 months. Three (9.4%) 3MAX-related complications occurred: 2 emboli to new territory (ENT) and one vascular perforation.CONCLUSIONS : The 3MAX is well-navigable in distal arteries making it useful as a frontline technique. However, the reperfusion rate with the 3MAX catheter alone seems lower than the ones reported with stent retrievers for such distal occlusions.
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