Stroke Etiology Modifies the Effect of Endovascular Treatment in Acute Stroke.
Stroke. 2019 Dec 18:STROKEAHA119028383. doi: 10.1161/STROKEAHA.119.028383. [Epub ahead of print]
|Authors/Editors:||Tiedt S, Herzberg M, Küpper C, Feil K, Kellert L, Dorn F, Liebig T, Alegiani A, Dichgans M, Wollenweber FA; GSR Investigators.|
Background and Purpose — Stroke etiology drives thrombus composition. We thus hypothesized that endovascular treatment shows different efficacy in cardioembolic versus noncardioembolic large-vessel occlusions (LVOs).
Methods — Procedural characteristics, grade of reperfusion, and functional outcome at discharge and 90 days were compared between patients with cardioembolic versus noncardioembolic LVO from the GSR-ET (German Stroke Registry–Endovascular Treatment; n=2589). To determine associations with functional outcome, adjusted odds ratios and 95% CIs were calculated using ordinal multivariable logistic regression models adjusting for potential baseline confounder variables.
Results — Endovascular treatment of cardioembolic LVO had a higher rate of successful reperfusion (85.6% versus 81.0%; P=0.002) and a higher rate of complete reperfusion after a single thrombectomy pass (45.7% versus 38.1%; P<0.001) compared with noncardioembolic LVO. Cardioembolic LVO was associated with better functional outcome at discharge (adjusted odds ratio, 1.61 [95% CI, 1.37–1.88]) and 90 days (adjusted odds ratio, 1.29 [95% CI, 1.09–1.53]). In mediation analysis, reperfusion explained 47% of the effect of etiology on functional outcome at discharge.
Conclusions — These results provide evidence for higher efficacy of endovascular treatment in cardioembolic LVO compared with noncardioembolic LVO.