ArticleStroke (Hoboken, N.J.)2023
Long Distance Air Ambulance Transfers for Endovascular Thrombectomy.
Article in Stroke (Hoboken, N.J.), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
3 citing papers in PubMed.
- Impact of transport modality on time to endovascular thrombectomy : A population-based registry study in rural Sweden.Scandinavian journal of trauma, resuscitation and emergency medicine · 2026Article
- Impact of Helicopter Transfer on Recanalization and Outcomes in Anterior Large Vessel Occlusion Strokes.Stroke · 2025Article
- Patients Residing in Rural Areas Transferred for Mechanical Thrombectomy Undergo Decreased Catheter-Based Treatment.Stroke (Hoboken, N.J.) · 2025Article
Corrections and comments
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Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Endovascular thrombectomy (EVT) is limited to comprehensive stroke centers (CSCs), with patients who first present to primary stroke centers (PSCs) transferred for treatment by road ambulance or helicopter emergency medical services (HEMS). We aimed to determine if there were outcome differences in patients transferred for EVT via HEMS. Methods: A retrospective observational study was performed in the setting of a large regional network with 1 CSC receiving patients directly, or via road ambulance from 3 metropolitan PSCs or HEMS from 13 more distant PSCs. Consecutive patients were identified from a mandatory national EVT registry. HEMS transfers were compared with 2 metropolitan patient groups: direct-to-CSC and metro PSC-to-CSC patients. The primary outcome was day 90 functional independence (modified Rankin scale score, 0-2). Secondary outcomes included day 90 death rate. Results: A total of 1183 EVT-treated patients were identified (45% women; median age, 69 years; 88% anterior circulation strokes; median baseline National Institutes of Health Stroke Scale score, 16). A total of 332 (28%) patients were HEMS transfers, 428 (36%) were direct-to-CSC, and 423 (36%) were metro PSC-to-CSC transfers. The median transfer distances to the CSC were 11 (8-11) miles for road ambulance and 81 (70-121) miles for HEMS. HEMS patients were matched at baseline with the 2 metropolitan groups, except for a lower prevalence of congestive heart failure ( Conclusion: In this large regional stroke network, patients transferred via HEMS for EVT had similar day 90 outcomes to their metropolitan counterparts despite longer transfer times. CSCs should not be discouraged from considering patients from more distant PSCs who require HEMS.
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