Anticoagulation After Femoral Artery Stent Insertion
Immediate Post-Procedure Management
- The European Society of Cardiology recommends dual antiplatelet therapy (DAPT) with aspirin 75-100 mg daily plus clopidogrel 75 mg daily as the standard treatment after femoral artery stent insertion, not anticoagulation 1, 2
- Loading doses should be administered before or at the time of stenting: clopidogrel 600 mg loading dose if not already on maintenance therapy 3, 4
- Aspirin 75-100 mg daily should be started immediately and continued indefinitely 1, 2, 5
- Clopidogrel 75 mg daily should be continued for at least 6 months after stenting 1, 2
Periprocedural Anticoagulation
- Unfractionated heparin during the procedure to maintain ACT 300-350 seconds (initial bolus 100 units/kg, with supplemental dosing as needed) 6
- Anticoagulation should be discontinued after the procedure unless there is a compelling indication to continue 4
Duration of Dual Antiplatelet Therapy
- For patients without high bleeding risk: DAPT for 6 months minimum 1, 2
- After 6 months, transition to single antiplatelet therapy (aspirin or clopidogrel) indefinitely 1, 5
- For patients at very high bleeding risk: DAPT may be shortened to 1 month 1, 2
- For patients at high bleeding risk but not high ischemic risk: DAPT for 1-3 months, then single antiplatelet therapy 1, 2
Special Circumstances
- If oral anticoagulation is required (e.g., atrial fibrillation): triple therapy (aspirin + clopidogrel + anticoagulant) should be limited to ≤1 week post-procedure 2, 5
- After 1 week, discontinue aspirin and continue dual therapy with clopidogrel 75 mg daily plus oral anticoagulant for up to 6 months 2, 5
- After 6 months, continue oral anticoagulant alone 2, 5
- Direct oral anticoagulants (DOACs) are preferred over warfarin when eligible 2, 5
Bleeding Risk Mitigation
- Proton pump inhibitor should be added for gastrointestinal protection during DAPT 5, 7
- Avoid omeprazole and esomeprazole as they inhibit CYP2C19 and reduce clopidogrel effectiveness 7