title: Times from symptom onset to hospital arrival in the Get with the Guidelines--Stroke Program 2002 to 2009: temporal trends and implications.
abstract: OBJECTIVE
  Time from symptom onset to hospital arrival is the most important factor in determining eligibility for intravenous tissue-type plasminogen activator. We used data from a large contemporary nationwide study to determine temporal trends in the proportions of patients arriving within time windows for potential acute ischemic stroke therapies.
  
  
  METHODS
  Trends in symptom onset to hospital arrival time ("onset-to-door time") for patients with acute ischemic stroke in the Get With The Guidelines-Stroke (GWTG-Stroke) program were analyzed between 2003 and 2009. Factors associated with early onset-to-door time (≤2 hours) were also examined.
  
  
  RESULTS
  Between April 2003 and March 2009, 1287 hospitals submitted data on 413 147 patients with acute ischemic stroke of whom 194 352 (47.0%) had a specific onset time documented. Among all 413 147 patients, onset-to-door time was documented as ≤2 hours in 20.6%, ≤3 hours in 25.1%, ≤3.5 hours in 26.8%, and ≤8 hours in 35.8%. Early arrival within 2 hours was significantly associated with emergency medical services transport (P<0.0001). There was no substantial change in onset-to-door time over the 6-year study period. Expansion of the tissue-type plasminogen activator treatment window from 3 to 4.5 hours (allowing 60 minutes for provision of tissue-type plasminogen activator) increases the pool of potentially eligible patients by 6.3% (30.1% relative increase).
  
  
  CONCLUSIONS
  More than one fourth of patients with ischemic stroke arrive within the time window for tissue-type plasminogen activator therapy; however, this percentage has remained unchanged over recent years. Further efforts are needed to increase the portion of patients with acute ischemic stroke presenting within the time window for acute interventions.
authors.affiliation: California Pacific Medical Center, Department of Neurosciences, USA.
authors.forename: David
authors.initials: D
authors.lastname: Tong
authors.forename: Mathew J
authors.initials: MJ
authors.lastname: Reeves
authors.forename: Adrian F
authors.initials: AF
authors.lastname: Hernandez
authors.forename: Xin
authors.initials: X
authors.lastname: Zhao
authors.forename: DaiWai M
authors.initials: DM
authors.lastname: Olson
authors.forename: Gregg C
authors.initials: GC
authors.lastname: Fonarow
authors.forename: Lee H
authors.initials: LH
authors.lastname: Schwamm
authors.forename: Eric E
authors.initials: EE
authors.lastname: Smith
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D016208:Databases, Factual / Q000639:trends; D004632:Emergency Medical Services / Q000592:standards / Q000639:trends*; D004636:Emergency Service, Hospital / Q000592:standards / Q000639:trends*; D006801:Humans; D008875:Middle Aged; D017410:Practice Guidelines as Topic / Q000592:standards; D020521:Stroke / Q000175:diagnosis* / Q000453:epidemiology / Q000628:therapy*; D013997:Time Factors