GUSTO criteria for severity of bleeding complications
Global Utilization of Streptokinase and t-PA for Occluded Coronary Arteries (GUSTO) criteria  for classifying the severity of bleeding complications were as follows:
Severe or life-threatening bleeding:
Intracranial bleeding or bleeding that causes substantial hemodynamic compromise requiring treatment
Bleeding which needs blood transfusion
Other bleeding, neither requiring transfusion nor causing hemodynamic compromise
- An international randomized trial comparing four thrombolytic strategies for acute myocardial infarction. The GUSTO investigators. N Engl J Med. 1993 Sep 2;329(10):673-82.