title: Efficacy of an early invasive strategy after fibrinolysis in ST-elevation myocardial infarction relative to the extent of coronary artery disease.
abstract: BACKGROUND
  A strategy of early transfer for coronary angiography and intervention is superior to a standard approach of delayed coronary angiography after fibrinolysis for ST-elevation myocardial infarction (STEMI). STEMI patients with lesions in noninfarct-related arteries have a worse prognosis compared with patients with single vessel disease. This study aimed to assess whether the benefits of an early invasive strategy differ in patients with single vessel and multivessel disease.
  
  
  METHODS
  The Trial of Routine ANgioplasty and Stenting after Fibrinolysis to Enhance Reperfusion in Acute Myocardial Infarction (TRANSFER-AMI) randomized STEMI patients receiving fibrinolysis to a strategy of early transfer and coronary angiography vs a standard approach. In this post hoc analysis, we stratified 992 patients into 2 groups according to the presence or absence of multivessel disease. We compared the 2 groups in terms of baseline characteristics, in-hospital management, and patient outcomes, and tested for treatment heterogeneity.
  
  
  RESULTS
  Multivessel disease was present in 369 (37%) patients. Patients with multivessel disease had a greater rate of the primary composite end point of in-hospital death, recurrence of infarction, recurrent ischemia, shock, or heart failure at 30 days (18.2% vs 10.8%; P < 0.001). An early invasive strategy was efficacious in both groups for the primary outcome. In multivariable analysis adjusting for Global Registry of Acute Coronary Events (GRACE) risk score, there was no significant treatment heterogeneity (all P interaction > 0.40) for the primary end point, or death/recurrence of infarction at 6 months and 1 year.
  
  
  CONCLUSIONS
  Multivessel disease is present in a significant proportion of STEMI patients treated with fibrinolysis and is associated with worse outcomes. A strategy of early transfer and coronary intervention after fibrinolysis was beneficial regardless of the presence or absence of multivessel disease.
authors.affiliation: Terrence Donnelly Heart Centre, St Michael's Hospital, University of Toronto, Toronto, Ontario, Canada; St Boniface General Hospital, University of Manitoba, Winnipeg, Manitoba, Canada.
authors.forename: Basem
authors.initials: B
authors.lastname: Elbarouni
authors.affiliation: Southlake Regional Health Centre, Newmarket, University of Toronto, Toronto, Ontario, Canada.
authors.forename: Warren J
authors.initials: WJ
authors.lastname: Cantor
authors.affiliation: St Boniface General Hospital, University of Manitoba, Winnipeg, Manitoba, Canada.
authors.forename: John
authors.initials: J
authors.lastname: Ducas
authors.affiliation: Mount Sinai Hospital, Toronto, Ontario, Canada.
authors.forename: Bjug
authors.initials: B
authors.lastname: Borgundvaag
authors.affiliation: Peter Munk Cardiac Centre, University Health Network, University of Toronto, Toronto, Ontario, Canada.
authors.forename: Vladimír
authors.initials: V
authors.lastname: Džavík
authors.affiliation: Oakville Hospital, Oakville, Ontario, Canada.
authors.forename: Michael
authors.initials: M
authors.lastname: Heffernan
authors.affiliation: Terrence Donnelly Heart Centre, St Michael's Hospital, University of Toronto, Toronto, Ontario, Canada.
authors.forename: Christopher E
authors.initials: CE
authors.lastname: Buller
authors.affiliation: Terrence Donnelly Heart Centre, St Michael's Hospital, University of Toronto, Toronto, Ontario, Canada; Canadian Heart Research Centre, Toronto, Ontario, Canada.
authors.forename: Anatoly
authors.initials: A
authors.lastname: Langer
authors.affiliation: Terrence Donnelly Heart Centre, St Michael's Hospital, University of Toronto, Toronto, Ontario, Canada; Canadian Heart Research Centre, Toronto, Ontario, Canada.
authors.forename: Shaun G
authors.initials: SG
authors.lastname: Goodman
authors.affiliation: Terrence Donnelly Heart Centre, St Michael's Hospital, University of Toronto, Toronto, Ontario, Canada. Electronic address: yana@smh.ca.
authors.forename: Andrew T
authors.initials: AT
authors.lastname: Yan
mesh_terms: D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000379:methods*; D017023:Coronary Angiography; D003324:Coronary Artery Disease / Q000150:complications* / Q000175:diagnosis / Q000628:therapy; D004562:Electrocardiography; D005260:Female; D005343:Fibrinolytic Agents / Q000627:therapeutic use*; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis / Q000209:etiology / Q000628:therapy*; D015607:Stents; D015912:Thrombolytic Therapy / Q000379:methods*; D013997:Time Factors; D016896:Treatment Outcome
chemical_list: D005343:Fibrinolytic Agents