Effects of streptokinase during acute myocardial infarction on the signal-averaged electrocardiogram and on the frequency of late arrhythmias

Abstract Although a number of studies have shown that the incidence of late potentials is lower after thrombolytic therapy, it is not known whether this is paralleled by fewer arrhythmic events during long-term follow-up. In patients with first acute myocardial infarction, filtered QRS duration was significantly shorter when treated with streptokinase (95 ± 11 ms, n = 53) than when treated with conventional therapy (99 ± 12 ms, n = 77, p 40 ) was shorter after thrombolysis (28 ± 11 vs 33 ± 12 ms, p