The Management of Persistent Distal Occlusions after Mechanical Thrombectomy and Thrombolysis: An Inter- and Intrarater Agreement Study.

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Boisseau, W. | Benomar, A. | Ducroux, C. | Fahed, R. | Smajda, S. | Diestro, J. D. B. | Charbonnier, G. | Ognard, J. | Burel, J. | ter Schiphorst, A. | Boulanger, M. | Nehme, A. | Boucherit, J. | Marnat, G. | Volders, D. | Holay, Q. | Forestier, G. | Bretzner, Martin | Roy, D. | Vingadassalom, S. | Elhorany, M. | Nico, L. | Jacquin, G. | Abdalkader, M. | Guedon, A. | Seners, P. | Janot, K. | Dumas, V. | Olatunji, R. | Gazzola, S. | Milot, G. | Zehr, J. | Darsaut, T. E. | Iancu, D. | Raymond, J.

Edité par CCSD ; American Society of Neuroradiology -

International audience. BACKGROUND AND PURPOSE: The best management of patients with persistent distal occlusion after mechanical thrombectomy with or without IV thrombolysis remains unknown. We sought to evaluate the variability and agreement in decision-making for persistent distal occlusions.MATERIALS AND METHODS: A portfolio of 60 cases was sent to clinicians with varying backgrounds and experience. Responders were asked whether they considered conservative management or rescue therapy (stent retriever, aspiration, or intra-arterial thrombolytics) a treatment option as well as their willingness to enroll patients in a randomized trial. Agreement was assessed using κ statistics.RESULTS: The electronic survey was answered by 31 physicians (8 vascular neurologists and 23 interventional neuroradiologists). Decisions for rescue therapies were more frequent (n = 1116/1860, 60%) than for conservative management (n = 744/1860, 40%; P < .001). Interrater agreement regarding the final management decision was “slight” (κ = 0.12; 95% CI, 0.09–0.14) and did not improve when subgroups of clinicians were studied according to background, experience, and specialty or when cases were grouped according to the level of occlusion. On delayed re-questioning, 23 of 29 respondents (79.3%) disagreed with themselves on at least 20% of cases. Respondents were willing to offer trial participation in 1295 of 1860 (69.6%) cases.CONCLUSIONS: Individuals did not agree regarding the best management of patients with persistent distal occlusion after mechanical thrombectomy and IV thrombolysis. There is sufficient uncertainty to justify a dedicated randomized trial.

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