Streptokinase and Enoxaparin as an Alternative to Fibrin-Specific Lytic-Based Regimens

Abstract Background: Enoxaparin was superior to unfractionated heparin (UFH), regardless of fibrinolytic agent in ST-elevation myocardial infarction (STEMI) patients receiving fibrinolytic therapy in ExTRACT-TIMI 25 (Enoxaparin and Thrombolysis Reperfusion for Acute Myocardial Infarction Treatment-Thrombolysis in Myocardial Infarction 25) trial. Objective: This post hoc analysis compared outcomes with streptokinase plus enoxaparin to the standard regimen of fibrin-specific lytic (FSL) plus UFH and to the newer combination of FSL plus enoxaparin. Methods: In ExTRACT-TIMI 25, STEMI patients received either streptokinase or a FSL (alteplase, reteplase or tenecteplase) at the physician’s discretion and were randomized to enoxaparin or UFH, stratified by fibrinolytic type. Thirty-day outcomes were adjusted for baseline characteristics, region, in-hospital percutaneous coronary intervention (PCI) and a propensity score for the choice of lytic. Results: The primary trial endpoint of 30-day death/myocardial infarction (MI) occurred in fewer patients in the streptokinase-enoxaparin cohort (n = 2083) compared with FSL-UFH (n = 8141) [10.2% vs 12.0%, adjusted odds ratio [$ OR_{adj} $] 0.76; 95% CI 0.62, 0.93; p = 0.008]. Major bleeding was significantly increased with streptokinase-enoxaparin compared with FSL-UFH ($ OR_{adj} $ 2.74; 95% CI 1.81; 4.14; p<0.001) but intracranial haemorrhage (ICH) was similar ($ OR_{adj} $ 0.90; 95% CI 0.40, 2.01; p = 0.79). Net clinical outcomes, defined as either death/MI/major bleeding or as death/MI/ICH tended to favour streptokinase-enoxaparin compared with FSL-UFH ($ OR_{adj} $ 0.88; 95% CI 0.73, 1.06; p = 0.17; and $ OR_{adj} $ 0.77; 95% CI 0.63,0.93; p = 0.008, respectively). Patients receiving FSL-enoxaparin (n = 8142) and streptokinase-enoxaparin therapies experienced similar adjusted rates of the primary endpoint ($ OR_{adj} $ 1.08; 95% CI 0.87, 1.32; p = 0.49) and net clinical outcomes. Conclusions: Our results suggest that fibrinolytic therapy with the combination of streptokinase and the potent anticoagulant agent enoxaparin resulted in similar adjusted outcomes compared with more costly regimens utilizing a FSL..

Medienart:

E-Artikel

Erscheinungsjahr:

2009

Erschienen:

2009

Enthalten in:

Zur Gesamtaufnahme - volume:69

Enthalten in:

Drugs - 69(2009), 11 vom: Juli, Seite 1433-1443

Sprache:

Englisch

Beteiligte Personen:

Giraldez, Roberto R. [VerfasserIn]
Wiviott, Stephen D. [VerfasserIn]
Nicolau, Jose C. [VerfasserIn]
Mohanavelu, Satishkumar [VerfasserIn]
Morrow, David A. [VerfasserIn]
Antman, Elliott M. [VerfasserIn]
Giugliano, Robert P. [VerfasserIn]

Links:

Volltext [lizenzpflichtig]

BKL:

44.40

44.38

Themen:

Enoxaparin
Major Bleeding
Percutaneous Coronary Intervention
Propensity Score
Streptokinase

doi:

10.2165/00003495-200969110-00003

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

SPR03320411X