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The present report describes our experience with air transfer of patients with acute ischemic stroke in whom intravenous tissue plasminogen activator (IV t-PA) failed for rescue endovascular therapy (EVT). Twenty-three consecutive patients in whom IV t-PA failed were transferred to our hospital for rescue EVT between February 2011 and April 2013. The amount of time required for transfer, distance, clinical outcomes, and complications were compared between patients transferred by ground (TG group; n = 17) and by air (TA group; n = 6). Computed tomography imaging on arrival revealed hemorrhagic transformation in 1 (5.9%) patient in the TG group, whereas none of the patients in the TA group developed any type of complication. The remaining 22 patients received rescue EVT. The elapsed time from the request call to arrival at our hospital did not significantly differ between the TG and TA groups (45.8 ± 4.9 min vs. 41.6 ± 2.3 min). However, the distance from the primary hospital to our institution was significantly longer for the TA group than for the TG group (38.8 ± 10.4 km vs. 13.5 ± 1.2 km, p = 0.001). The frequency of favorable outcomes (modified Rankin Scale 0-1 at 90 days after onset) in the TG and TA groups were 25.0% and 50.0%, respectively (p = 0.267). Air transfer for patients after IV t-PA failure allowed for more rapid delivery of patients over longer distances than ground transfer.

Preliminary Experience with Air Transfer of Patients for Rescue Endovascular Therapy after Failure of Intravenous Tissue Plasminogen Activator