Implementation of a prealert to improve in-hospital treatment of anticoagulant-associated strokes: analysis of a prehospital pathway change in a large UK centralised acute stroke system.

Difference-in-difference analysis demonstrated a highly significant 31.4 min (95% CI −46.8 to −16.1; p<0.0001) reduction in the bimonthly median door-to-scan time for patients on anticoagulants 4–48 hours post onset following implementation of the prealert ( figure 1 ).

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