Journal Article

Workflow and factors associated with delay in the delivery of intra-arterial treatment for acute ischemic stroke in the MR CLEAN trial

Boodt, Nikki, Lingsma, Hester F, van Zwam, Wim H, van der Lugt, Aad, Berkhemer, Olvert A, Rood, Pleunie P M, Dippel, Diederik W J, Venema, Esmee, Roos, Yvo B W E M, Majoie, Charles B L M, van Oostenbrugge, Robert J

2018

Overview

ObjectiveThe effect of intra-arterial treatment (IAT) for acute ischemic stroke is highly time-dependent. We investigated the delay of IAT and factors associated with such delay.MethodsMR CLEAN was a randomized trial of IAT plus usual care versus usual care alone (n=500). With multivariable linear regression, we analyzed the effect of intravenous treatment, general anesthesia, off-hours and inter-hospital transfer on time to admission to the emergency department (ED) of the intervention center and time to treatment. Furthermore, we assessed compliance with a target of 75 min for time from ED to treatment, and calculated the potential absolute increase in the number of patients with a good outcome (modified Rankin Scale score ≤2) if this target had been achieved in all treated patients.ResultsInter-hospital transfer prolonged time to ED by 140 min (95% CI 129 to 150) but reduced time from ED to treatment by 77 min (95% CI 64 to 91). Time from ED to treatment was increased by 19 min by general anesthesia (95% CI 5 to 33) and total time was increased by 23 min during off-hours (95% CI 6 to 40). The in-hospital target was achieved in 11.5% (22/192) of patients. Full compliance with the target time of 75 min from ED to treatment would have increased the proportion of patients with a good outcome by 7.6% (95% CI 6.7% to 8.5%).ConclusionInter-hospital transfer is an important cause of delay in the delivery of IAT and every effort should be made to avoid transfers and reduce transfer-related delay. Furthermore, in-hospital workflow should be optimized to improve functional outcome after IAT.

• Publisher: BMJ Publishing Group LTD
• Subject: Administration, Intravenous / Aged / Aged, 80 and over / Brain Ischemia - epidemiology / Brain Ischemia - therapy / Clinical trials / Endovascular Procedures - adverse effects / Endovascular Procedures - standards / Female / Humans / Male / Medical imaging / Middle Aged / Netherlands - epidemiology / Patients / Prospective Studies / Retrospective Studies / Stroke / Stroke - epidemiology / Stroke - therapy / Time-to-Treatment - standards / Treatment Outcome / Workflow