Abstract: | ST changes were assessed in records from electrocardiographic leads I, II, III, V as well as monitoring leads in 109 patients with myocardial infarction on thrombolytic and/or heparin treatment conducted under angiographic control. In patients with coronary reperfusion, achieved by thrombolytic treatment within 8 hours of the onset of infarction, ST displacement diminished more than twofold by the third hour of treatment in records from leads I, II, III and V, there was a rapid ST fall in monitoring leads that started within 90 min after the onset of thrombolytic therapy and went on for not more than 60 min at a maximum rate; ST reached its baseline (mean ST level over the last 6 hours of 24-hour monitoring) in records from the monitoring leads within 7 hours after the onset of thrombolytic therapy. These signs of coronary reperfusion are suggestive of the recovery of coronary flow by means of thrombolytic therapy within 8 hours of the onset of myocardial infarction. |