Benchmarking the Extent and Speed of Reperfusion: First Pass TICI 2c-3 Is a Preferred Endovascular Reperfusion Endpoint

Other authors

Institut Català de la Salut

[Yoo AJ, Soomro J] Department of Neurointervention, Texas Stroke Institute, Fort Worth, TX, United States. [Andersson T] Neuroradiology, Karolinska University Hospital, Clinical Neuroscience Karolinska Institutet, Stockholm, Sweden. Medical Imaging, Allgemeine Ziekenhuis Groeninge, Kortrijk, Belgium. [Saver JL] Department of Neurology, University of California, Los Angeles, Los Angeles, CA, United States. [Ribo M] Unitat d’Ictus, Servei de Neurologia, Vall d'Hebron Hospital Universitari, Barcelona, Spain. [Bozorgchami H] Department of Neurology, Oregon Health and Science University Hospital, Portland, OR, United States

Vall d'Hebron Barcelona Hospital Campus

Publication date

2021-12-16T13:20:21Z

2021-12-16T13:20:21Z

2021-05-11



Abstract

Isquèmia cerebral; Trombectomia mecànica; Reperfusió


Isquemia cerebral; Trombectomía mecánica; Reperfusión


Brain ischaemia; Mechanical thrombectomy; Reperfusion


Background and Purpose: End-of-procedure substantial reperfusion [modified Treatment in Cerebral Ischemia (mTICI) 2b-3], the leading endpoint for thrombectomy studies, has several limitations including a ceiling effect, with recent achieved rates of ~90%. We aimed to identify a more optimal definition of angiographic success along two dimensions: (1) the extent of tissue reperfusion, and (2) the speed of revascularization. Methods: Core-lab adjudicated TICI scores for the first three passes of EmboTrap and the final all-procedures result were analyzed in the ARISE II multicenter study. The clinical impact of extent of reperfusion and speed of reperfusion (first-pass vs. later-pass) were evaluated. Clinical outcomes included 90-day functional independence [modified Rankin Scale (mRS) 0–2], 90-day freedom-from-disability (mRS 0–1), and dramatic early improvement [24-h National Institutes of Health Stroke Scale (NIHSS) improvement ≥ 8 points]. Results: Among 161 ARISE II subjects with ICA or MCA M1 occlusions, reperfusion results at procedure end showed substantial reperfusion in 149 (92.5%), excellent reperfusion in 121 (75.2%), and complete reperfusion in 79 (49.1%). Reperfusion rates on first pass were substantial in 81 (50.3%), excellent reperfusion in 62 (38.5%), and complete reperfusion in 44 (27.3%). First-pass excellent reperfusion (first-pass TICI 2c-3) had the greatest nominal predictive value for 90-day mRS 0–2 (sensitivity 58.5%, specificity 68.6%). There was a progressive worsening of outcomes with each additional pass required to achieve TICI 2c-3. Conclusions: First-pass excellent reperfusion (TICI 2c-3), reflecting rapid achievement of extensive reperfusion, is the technical revascularization endpoint that best predicted functional independence in this international multicenter trial and is an attractive candidate for a lead angiographic endpoint for future trials.


Cerenovus sponsored the ARISE II study, and provided support for open access to this article.

Document Type

Article


Published version

Language

English

Publisher

Frontiers Media

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Attribution 4.0 International

http://creativecommons.org/licenses/by/4.0/

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