Academic Research Consortium for High Bleeding Risk (ARC-HBR) Criteria
HematologyBeta toolThis tool is in beta. It has undergone internal validation but still requires additional testing. Always confirm the data entered and the results obtained before clinical use. It should not be used as the sole basis for clinical decisions.
Anticipated long-term oral anticoagulationExplicit yes/no confirmation is required. Confirm ongoing oral anticoagulation expectation in the PCI treatment context.
Severe or end-stage chronic kidney diseaseExplicit yes/no confirmation is required. This is the ARC-HBR major renal criterion.
Hemoglobin <11 g/dLExplicit yes/no confirmation is required. Confirm the major anemia threshold directly rather than inferring from partial data.
Spontaneous bleeding with hospitalization and transfusion in the past 6 monthsExplicit yes/no confirmation is required. The major criterion requires both hospitalization and transfusion within the 6-month window.
Baseline thrombocytopenia, platelets <100×10^9/LExplicit yes/no confirmation is required. Use the baseline platelet criterion rather than transient procedure-related thrombocytopenia.
Chronic bleeding diathesisExplicit yes/no confirmation is required. This criterion requires clinician judgment.
Liver cirrhosis with portal hypertensionExplicit yes/no confirmation is required.
Active malignancy within the past 12 monthsExplicit yes/no confirmation is required. Confirm the 12-month activity window clinically.
Previous spontaneous intracranial hemorrhageExplicit yes/no confirmation is required.
Previous traumatic intracranial hemorrhage within the past 12 monthsExplicit yes/no confirmation is required.
Known brain arteriovenous malformationExplicit yes/no confirmation is required.
Moderate or severe ischemic stroke within the past 6 monthsExplicit yes/no confirmation is required. This major stroke criterion is distinct from the minor prior-ischemic-stroke criterion.
Nondeferrable major surgery on dual antiplatelet therapyExplicit yes/no confirmation is required. This criterion requires clinician judgment in the antiplatelet-treatment context.
Recent major surgery or major trauma before PCIExplicit yes/no confirmation is required. Confirm the 30-day pre-PCI timing window.
Age 75 years or olderExplicit yes/no confirmation is required. This version uses an explicit clinician-entered age criterion instead of deriving from numeric age.
Moderate chronic kidney diseaseExplicit yes/no confirmation is required. This is the ARC-HBR minor renal criterion.
Mild anemiaExplicit yes/no confirmation is required. Use the original sex-specific minor anemia thresholds.
Spontaneous bleeding with hospitalization or transfusion within the past 12 months, not majorExplicit yes/no confirmation is required. Do not double-count bleeding that already satisfies the major 6-month criterion.
Long-term oral NSAID or steroid useExplicit yes/no confirmation is required. The original source does not provide a universal duration rule; clinician judgment is required.
Any ischemic stroke not meeting the major criterionExplicit yes/no confirmation is required. Do not mark this minor criterion when the major recent moderate/severe stroke criterion is already present.
Clinical noticeEducational high-bleeding-risk classification support only. Confirm every ARC-HBR criterion clinically and do not use this classifier as the sole basis for antithrombotic management decisions.
Context and use
Method
Count major and minor criteria; suppress paired lower-level duplicates; high risk means at least 1 major or 2 minor criteria.
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