Importance of Occlusion Site for Thrombectomy Technique in Stroke
Marie Louise E. Bernsen, Robert‐ Jan B. Goldhoorn, Hester F. Lingsma, Robert J. van Oostenbrugge, Wim H. van Zwam, Maarten Uyttenboogaart, Yvo B.W.E.M. Roos, Jasper M. Martens, Jeannette Hofmeijer, Diederik W.J. Dippel, Aad van der Lugt, Charles B.L.M. Majoie, Yvo B.W.E.M. Roos, Robert J. van Oostenbrugge, Wim H. van Zwam, Jelis Boiten, Jan Albert Vos, Ivo G.H. Jansen, Maxim J.H.L. Mulder, Robert‐ Jan B. Goldhoorn, Kars C.J. Compagne, Manon Kappelhof, Josje Brouwer, Sanne J. den Hartog, Wouter H. Hinsenveld, Diederik W.J. Dippel, Bob Roozenbeek, Aad van der Lugt, Adriaan C.G.M. van Es, Charles B.L.M. Majoie, Yvo B.W.E.M. Roos, Bart J. Emmer, Jonathan M. Coutinho, Wouter J. Schonewille, Jan Albert Vos, Marieke J.H. Wermer, Marianne A.A. van Walderveen, Julie Staals, Robert J. van Oostenbrugge, Wim H. van Zwam, Jeannette Hofmeijer, Jasper M. Martens, Geert J. Lycklama, A A Lycklama à Nijeholt, Jelis Boiten, Sebastiaan F. de Bruijn, Lukas C. van Dijk, H. Bart van der Worp, Rob H. Lo, Ewoud J. van Dijk, Hieronymus D. Boogaarts, J. de Vries, Paul L.M. de Kort, Julia van Tuijl, Jo P. Peluso, Puck Fransen, Jan S.P. van den Berg, Boudewijn A.A.M. van Hasselt, Leo A.M. Aerden, René J. Dallinga, Maarten Uyttenboogaart, Omid Eschgi, Reinoud P.H. Bokkers, Tobien H.C.M.L. Schreuder, Roel J.J. Heijboer, Koos Keizer, Lonneke S.F. Yo, Heleen M. den Hertog, Tomas Bulut, Paul J.A.M. Brouwers, Charles B.L.M. Majoie, Wim H. van Zwam, Aad van der Lugt, Geert J. Lycklama, A A Lycklama à Nijeholt, Marianne A.A. van Walderveen, Marieke E.S. Sprengers, Sjoerd F.M. Jenniskens, René van den Berg, Albert J. Yoo, Ludo F.M. Beenen, Alida A. Postma, Stefan D. Roosendaal, Bas F.W. van der Kallen, Ido R. van den Wijngaard, Adriaan C.G.M. van Es, Bart J. Emmer, Jasper M. Martens, Lonneke S.F. Yo, Jan Albert Vos, Joost Bot, Pieter‐Jan van Doormaal, Anton Meijer, Elyas Ghariq, Reinoud P.H. Bokkers, Marc P. van Proosdij, G. Menno Krietemeijer, Jo P. Peluso, Hieronymus D. Boogaarts, Rob Lo
Abstract
Background and Purpose: Thrombectomy with stent retriever and direct aspiration are equally effective in the endovascular treatment of anterior circulation acute ischemic stroke. We report efficacy and safety of initial treatment technique per occlusion segment. Methods: For this study, we analyzed data from the MR CLEAN Registry, a prospective, observational study in all centers that perform endovascular therapy in the Netherlands. We used ordinal logistic regression analysis to compare clinical and technical results of first line direct aspiration treatment with that of stent retriever thrombectomy stratified for occlusion segment. Primary outcome measure was functional outcome at 3 months. Secondary outcome measures included reperfusion grade expressed as the extended Thrombolysis in Cerebral Infarction score, periprocedural complication risk, time to reperfusion, and mortality. Results: Of the 2282 included patients, 1658 (73%) were initially treated with stent retriever and 624 (27%) with aspiration. Four hundred sixty-two patients had an occlusion of the intracranial part of the carotid artery, 1349 of the proximal middle cerebral artery, and 471 of the distal parts of the middle cerebral artery. There was no difference in functional outcome between aspiration and stent retriever thrombectomy (odds ratio, 1.0 [95% CI, 0.9–1.2]) in any of the occlusion segments ( P value for interaction=0.2). Reperfusion rate was higher in the aspiration group (odds ratio, 1.4 [95% CI, 1.1–1.6]) and did not differ between occlusion segments ( P value for interaction=0.6). Procedure times were shorter in the aspiration group (minutes 50 versus 65 minutes; P <0.0001). There was no difference in periprocedural complications or mortality. Conclusions: In unselected patients with anterior circulation infarcts, we observed equal functional outcome of aspiration and stent retriever thrombectomy in all occlusion segments. When aspiration was the first line treatment modality, reperfusion rates were higher and procedure times shorter in all occlusion segments.