Bleeding Academic Research Consortium

Type 0:

• No bleeding

Type 1:

• Bleeding that is not actionable and does not cause the patient to seek unscheduled performance of studies, hospitalization, or treatment by a health-care professional; may include episodes leading to self-discontinuation of medical therapy by the patient without consulting a health-care professional.

Type 2:

• Any overt, actionable sign of hemorrhage (e.g., more bleeding than would be expected for a clinical circumstance, including bleeding found by imaging alone) that does not fit the criteria for type 3, 4, or 5 but does meet at least one of the following criteria:

• requiring nonsurgical, medical intervention by a health-care professional,
• leading to hospitalization or increased level of care, or
• prompting evaluation

Type 3:

Type 3a:

• Overt bleeding plus hemoglobin drop of 3 to < 5 g/dL* (provided hemoglobin drop is related to bleed)
• Any transfusion with overt bleeding

Type 3b:

• Overt bleeding plus hemoglobin drop ≥5 g/dL* (provided hemoglobin drop is related to bleed),
• Cardiac tamponade,
• Bleeding requiring surgical intervention for control (excluding dental/nasal/skin/hemorrhoid),
• Bleeding requiring intravenous vasoactive agents

Type 3c:

• Intracranial hemorrhage (does not include microbleeds or hemorrhagic transformation, does include intraspinal),
• Subcategories confirmed by autopsy or imaging or lumbar puncture,
• Intraocular bleed compromising vision.

Type 4:

• CABG-related bleeding,
• Perioperative intracranial bleeding within 48 h,
• Reoperation after closure of sternotomy for the purpose of controlling bleeding
• Transfusion of ≥ 5 U whole blood or packed red blood cells within a 48-h period,
• Chest tube output more than or equal to 2L within a 24-h period

Type 5:

• Fatal bleeding

Type 5a:

• Probable fatal bleeding; no autopsy or imaging confirmation but clinically suspicious

Type 5b:

• Definite fatal bleeding; overt bleeding or autopsy or imaging confirmation