Auto-Launching Of Interfacility Transport To Referring Hospitals For Presumed Emergent Large Vessel Occlusion Strokes May Decrease Time To Mechanical Thrombectomy And Improve Outcomes

Introduction: Mechanical thrombectomy (MT) is effective for select acute ischemic strokes due to large vessel occlusion (LVO-AIS). Systems of care need to expeditiously identify, transfer, and treat qualifying LVO-AIS. Data are needed to define which ingredients are most effective when engineering LVO-AIS regional systems of care. Methods: Strong Memorial Hospital (SMH) is a Comprehensive Stroke Center in Rochester, NY serving twenty-two New York State designed stroke centers (NYS-DSC). Arnot Ogden Medical Center (AOMC) is NYS-DSC located in Elmira, NY, 115 miles from SMH. Clinical leaders at SMH and AOMC collaborated to engineer a system of care to expeditiously transfer qualifying MT candidates. The system of care, dubbed Code LVO, included the auto-launching of an interfacility transport team (preferable a medical helicopter) to AOMC and notification to the SMH Vascular Neurologist (VN) on ED arrival for any presumed strokes with an NIHSS of >/= 10 and last known well time (LKWT) of /=6 and an LVO via a cloud-based image sharing platform. We retrospectively reviewed the records of LVO-AIS transfers in a QA database to identify the door-in-door-out (DIDO) time, AOMC door to SMH door (D2D) time, and AOMC door to SMH skin puncture (D2S) time, and the outcomes of patients before and after Code LVO implementation. Results: Over an 18-month period pre- Code LVO, there were seven AOMC to SMH LVO-AIS transfers. None underwent MT due to large or completed infarcts on SMH arrival. Seventy-one percent died or went to hospice. The median DIDO time was 93 minutes (range 66-273) and D2D was 239 minutes (range 112-392). Post- Code LVO, six Code LVO evaluations were requested, and three were transferred. All LVO-AIS underwent successful MT, with a median DIDO time of 45 minutes (range 44-60), D2D time of 95 minutes (range 85-102), and DTS time of 141 minutes (124-158) and went to nursing home or acute rehab. Conclusions: Auto-launching of interfacility transport to referring hospitals for select presumed LVO-AIS may decrease time to MT and improve outcomes. Further study is needed to outline its value, in terms of patient outcomes, resource utilization, and safety.