To the Editor: The discussion of fibrinolysis in the recently published guidelines for the management of acute coronary syndromes 20061 is interesting. The recommendations clearly indicate that second-generation agents should be preferred to streptokinase in all circumstances. The guidelines reference the GUSTO-I trial data2 as the primary support for those recommendations. These data are, at best, debatable in terms of showing any benefit of front-loaded tissue plasminogen activator over streptokinase, and then only in limited circumstances (ie, patients aged less than 75 years with anterior infarcts and within 4 hours of the onset of symptoms).3,4
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