Objectives: The aim of this study was to assess the safety and outcomes of mechanical thrombectomy (MT) performed at a stroke center by interventional cardiologists (ICs) compared with other interventionists. The primary endpoint was functional independence of stroke survivors (modified Rankin scale score 0-2) at 3 months. The secondary endpoints included recanalization rate, reduction in stroke severity, and 3-month mortality.
Background: MT is a validated treatment for large vessel occlusion acute ischemic stroke. Incorporating ICs with their infrastructure into a comprehensive stroke team may increase the accessibility of this therapy.
Methods: In this single-center, prospective study, we included 248 ischemic stroke patients (mean age 68 ± 13 years, 48% women) with confirmed large vessel occlusion. The procedures were performed by ICs (n = 80), vascular surgeons (n = 116), and neuroradiologists (n = 52).
Results: Functional independence after 3 months was similar between patients operated by cardiologists and other specialists (modified Rankin scale score 0-2 in 44% vs 55%; P = 0.275). Similarly, the mortality rate at 3 months did not differ (28% vs 31%; P = 0.585). Procedures performed by cardiologists took longer than those performed by other specialists (120 minutes vs 105 minutes; P = 0.020). A percentage of procedures with angiographic success (TICI [Thrombolysis In Cerebral Infarction] grade 2b or 3) was lower when performed by cardiologists (55.7% vs 71.7%; P = 0.013), but the change in stroke severity (National Institutes of Health Stroke Scale score after 24 hours) was similar.
Conclusions: Endovascular treatment in stroke provided by interventional cardiologists in cooperation with noninvasive stroke specialists is noninferior to procedures performed by the other endovascular specialists. Mortality and functional independence after 3 months are similar regardless of an interventionist performing the procedure.
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