The use of thrombolytic agents to treat peripheral arterial occlusions is a new method. There have been clinical trials with Streptokinase, Urokinase and rt-PA (recombinant tissue plasminogen activator). Despite its advantages, information about complications caused by the use of rt-PA and about its place in treatment is still not complete. And there are not enough studies that are made to form a safe protocol for the use of rt-PA in the treatment of acute peripheral arterial occlusions. The aim of this study was to establish a dose range for rt-PA and to follow the patients with a protocol during and after thrombolysis. Between May 1999 to January 2000, 14 patients with symptoms of pain, poikilothermia, cyanosis and loss of function came to Istanbul Medical Faculty Emergency Surgery Unit. Bolus injection of 5 mgr of rt-PA was followed by 15 minutes of interval. The extent of thrombolysis was checked by angiography and then bolus injection of 5 mgr of rt-PA was repeated. After angiographic control, patients having insufficient thrombolysis, received 0.05 mgr/kg/hour of infusion for 12 hours. At the end of 12 hours, thrombolytic treatment ended with a control angiography. A thromboembolectomy operation was made to patients still having an occlusion after thrombolysis. On the other hand, to avoid re-occlusions, all of the patients received 1.5 mgr/kg/day low molecular weight heparin (enoxyparine).