Improving Door-to-Needle Times for Acute Ischemic Stroke

Abstract

BACKGROUND: The effectiveness of specific systems changes to reduce DTN (door-to-needle) time has not been fully evaluated. We analyzed the impact of 4 specific DTN time reduction strategies implemented prospectively in a staggered fashion. METHODS AND RESULTS: The HASTE (Hurry Acute Stroke Treatment and Evaluation) project was implemented in 3 phases at a single academic medical center. In HASTE I (June 6, 2012 to June 5, 2013), baseline performance was analyzed. In HASTE II (June 6, 2013 to January 24, 2015), 3 changes were implemented: (1) a STAT stroke protocol to prenotify the stroke team about incoming stroke patients; (2) administering alteplase at the computed tomography (CT) scanner; and (3) registering the patient as unknown to allow immediate order entry. In HASTE III (January 25, 2015 to June 29, 2015), we implemented a process to bring the patient directly to CT on the emergency medical services stretcher. Log-transformed DTN time was modeled. Data from 350 consecutive alteplase-treated patients were analyzed. Multivariable regression showed the following factors to be significant: giving alteplase in the CT (32% decrease in DTN time, 95% confidence interval [CI] 38%-55%), stretcher to CT (30% decrease in DTN time, 95% CI 16%-42%), patient registered as unknown (12% decrease in DTN time, 95% CI 3%-20%), STAT stroke protocol (11% decrease in DTN time, 95% CI 1%-20%), and stroke severity (National Institutes of Health Stroke Scale score 6-8: 19% decrease in DTN time, 95% CI 6%-31%; National Institutes of Health Stroke Scale score >8: 27% decrease in DTN time, 95% CI 17%-37%). CONCLUSIONS: Taking the patient to CT on the emergency medical services stretcher, registering the patient as unknown, STAT stroke protocol, and administering alteplase in CT are associated with lower DTN time.