“…During the administration of streptokinase in patients with a recent thromboembolic occlusion of a limb artery, patency of the main artery can be restored (Fletcher et al, 1959;Gross et al, 1960;Kahn et al, 1961;Cotton et al, 1962;Nilsson and Olow, 1962;McNicol et al, 1963;Salmon et al, 1963;Schmutzler, 1963Schmutzler, , 1968Verstraete et al, 1963;Winckelmann et al, 1963;Marchal et al, 1964;Haan and Tilsner, 1965;Hess, 1967). Nevertheless, neither the incidence of spontaneous disobstruction nor the optimal dose and duration of streptokinase therapy have yet been established.…”