“…[1][2][3][4] At present, the 3 fibrinolytic substances commonly in use are streptokinase, [5][6][7][8] urokinase (UK), [7][8][9][10][11][12][13][14] and recombinant tissue plasminogen activator (rtPA). [15][16][17][18] The optimum thrombolytic agent, dosage, and application technique have not been established by controlled comparative studies; however, there is circumstantial evidence that urokinase and rtPA have some advantages over streptokinase and, at least in retrospect, seem to be superior in efficacy and safety. [6][7][8] The aim of this study was to compare rtPA with urokinase in terms of efficacy, safety, and clinical benefit in an open, prospective, and randomized multicenter trial.…”