Efficacy of an Early Invasive Strategy After Fibrinolysis in ST-Elevation Myocardial Infarction Relative to the Extent of Coronary Artery Disease

• Published in: Canadian journal of cardiology 2014-12, Vol.30 (12), p.1555-1561
• Main Authors: Elbarouni, Basem, MD, Cantor, Warren J., MD, Ducas, John, MD, Borgundvaag, Bjug, MD, PhD, Džavík, Vladimír, MD, Heffernan, Michael, MD, PhD, Buller, Christopher E., MD, Langer, Anatoly, MD, MSc, Goodman, Shaun G., MD, MSc, Yan, Andrew T., MD
• Format: Article
• Language: English
• Subjects: Aged; Angioplasty, Balloon, Coronary - methods; Cardiovascular; Coronary Angiography; Coronary Artery Disease - complications; Coronary Artery Disease - diagnosis; Coronary Artery Disease - therapy; Electrocardiography; Female; Fibrinolytic Agents - therapeutic use; Follow-Up Studies; Humans; Male; Middle Aged; Myocardial Infarction - diagnosis; Myocardial Infarction - etiology; Myocardial Infarction - therapy; Stents; Thrombolytic Therapy - methods; Time Factors; Treatment Outcome
• ISSN: 0828-282X; 1916-7075
• DOI: 10.1016/j.cjca.2014.09.001

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 T rial of R outine AN gioplasty and S tenting after F ibrinolysis to E nhance R eperfusion in A cute M yocardial I nfarction (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 G lobal R egistry of A cute C oronary E vents (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.