Reocclusion of Coronary Artery during Coronary Thrombolysis in Patients without Severe Residual Stenosis

We present 4 cases of acute reocclusion of a coronary artery . They had total occlusion at the time of acute myocardial infarction, and had beenrecanalized with intracoronary urokinase infusion with a residual lesion of less than 50%. Reocclusion occurred by thrombus formation at the same location, where total occlusion was seenin acute myocardial infarction. These cases may suggest that thrombus formation is a major cause for acute occlusion in some patients without significant obstructive coronary artery disease, as well as the coronary artery wall abnormality is.

Acute myocardial infarction

Coronary thrombolysis

Reocclusion