›Immediate reversal for urgent surgery with high bleeding risk
›No routine reversal for isolated lab abnormality without bleeding unless very high INR or procedure planned
Warfarin reversal
›Warfarin management
›Hold warfarin
›Vitamin K PO 1 mg to 2.5 mg for elevated INR without bleeding local protocol dependent
›Vitamin K IV 5 mg to 10 mg for major bleeding or urgent procedure
›4 factor PCC for major bleeding
›Dose per product and INR local protocol dependent
›Fresh frozen plasma if PCC unavailable
Factor Xa inhibitor reversal
›Apixaban and rivaroxaban reversal
›Hold agent
›Andexanet alfa for life threatening bleeding when available local protocol dependent
›4 factor PCC 50 units per kg IV for life threatening bleeding when andexanet unavailable local protocol dependent
›Activated charcoal if ingestion within 2 hours and airway protected
Dabigatran reversal
›Dabigatran reversal
›Hold agent
›Idarucizumab 5 g IV total
›Two consecutive 2.5 g doses
›Hemodialysis for severe bleeding with renal failure when needed
›Activated charcoal if ingestion within 2 hours and airway protected
Heparin and low molecular weight heparin reversal
›Heparin reversal
›Stop infusion
›Protamine dosing
›1 mg protamine per 100 units heparin given in prior 2 to 3 hours
›Maximum single dose 50 mg
›Enoxaparin reversal
›Protamine 1 mg per 1 mg enoxaparin if within 8 hours
›Protamine 0.5 mg per 1 mg enoxaparin if 8 to 12 hours
Transfusion and adjuncts
›Blood product strategy
›PRBC transfusion threshold individualized
›Platelets for antiplatelet associated life threatening bleeding or thrombocytopenia per cause local protocol dependent
›Fibrinogen replacement
›Cryoprecipitate or fibrinogen concentrate to target at least 1.5 g/L in active bleeding
Consults and reassessment loop
›Consultation plan
›Hematology for complex coagulopathy or inhibitors
›Gastroenterology for suspected GI bleeding
›Neurosurgery for intracranial hemorrhage
›Reassessment loop
›Repeat vitals every 15 to 30 minutes until stable
›Repeat hemoglobin at 4 to 6 hours or sooner if unstable
›Repeat INR or drug relevant test after reversal when applicable
17Disposition/dispo16
Level of care criteria
›ICU criteria
›Hemodynamic instability
›Ongoing major bleeding
›Intracranial hemorrhage
›Need for massive transfusion protocol
Admission and observation
›Inpatient admission criteria
›Major bleeding requiring transfusion or reversal
›Suspected occult bleeding with dropping hemoglobin
›Observation pathway criteria
›Elevated INR treated with vitamin K without bleeding
›Stable minor bleeding with reliable follow up
Discharge criteria
›Discharge criteria
›No ongoing bleeding
›Stable hemoglobin when checked
›Clear anticoagulant plan documented
›Reliable follow up within 24 to 72 hours when INR or dosing change involved
18Discharge Instructions/di17
Copy discharge instructions
›Patient instructions
›Your blood clotting tests were abnormal while on blood thinner medication
›Return to the emergency department right away for
›New or worsening bleeding
›Black stools or vomiting blood
›Severe headache
›New weakness or trouble speaking
›Fainting or severe dizziness
›Medication plan
›Hold blood thinner as directed
›Do not restart until instructed by your clinician
›Avoid
›NSAID pain medicines unless your clinician says it is safe
›Alcohol binge drinking
›Follow up
›Anticoagulation clinic or prescriber within 24 to 72 hours
›Repeat blood testing as arranged
19References/r8
Guidelines and core evidence
›Key references
›American College of Chest Physicians Antithrombotic Therapy Guidelines 2021
›American Heart Association and American Stroke Association guideline on anticoagulant associated intracerebral hemorrhage latest update local protocol dependent
›ISTH guidance on management of bleeding in patients on direct oral anticoagulants 2016 to 2022 updates local protocol dependent
›American Society of Hematology guidelines on venous thromboembolism management and anticoagulation reversal 2018 to 2023 updates local protocol dependent
›Andexanet alfa ANNEXA 4 study 2019
›Idarucizumab RE VERSE AD study 2015
›Source file
Evidence & Review
Reviewed by SymptomDx Medical Team·Last reviewed
SymptomDx is an educational tool for medical professionals. It does not replace clinical judgment. Verify all clinical data and drug dosages with authoritative sources.