Apixaban Dosing After Hip Procedure

Dosing Regimen Details

The recommended dose of apixaban for venous thromboembolism (VTE) prophylaxis after hip replacement surgery is 2.5 mg taken orally twice daily for 5 weeks, as suggested by the American Society of Anesthesiologists 1
The duration of apixaban therapy should be 5 weeks (35 days) for total hip replacement (THR), according to the American College of Surgeons 1

For patients on apixaban requiring hip surgery with neuraxial anesthesia, interruption times up to five days may be needed, as recommended by the American Society of Regional Anesthesia and Pain Medicine 2
Apixaban can be resumed when adequate hemostasis has been established, and if venous thromboprophylaxis is indicated immediately post-surgery, heparin or fondaparinux can be administered at least six hours after the procedure, as suggested by the American College of Cardiology 1

Renal function should be monitored postoperatively, as surgical procedures may affect renal function, according to the National Kidney Foundation 1
Individual bleeding risk should be considered when determining the timing of the first dose, as recommended by the American Heart Association 2
Potential drug interactions, particularly with P-glycoprotein inhibitors and CYP3A4 inhibitors, should be taken into account, as suggested by the European Medicines Agency 1

Inadequate duration of prophylaxis, not continuing for the full recommended 5 weeks after hip replacement, should be avoided, as recommended by the American Academy of Orthopaedic Surgeons 1
Failure to adjust for patient factors, such as renal function, age, weight, or concomitant medications, should be avoided, according to the American Geriatrics Society 1
Overlapping anticoagulants when transitioning between anticoagulants should be avoided to prevent excessive anticoagulation, as suggested by the International Society on Thrombosis and Haemostasis 1
Improper management with epidural catheters, requiring special care with timing of apixaban administration, should be avoided, as recommended by the American Society of Anesthesiologists 1

The American College of Chest Physicians recommends resuming apixaban at least 24 hours after surgery once adequate hemostasis is established, with timing extended to 48-72 hours for high bleeding risk procedures 3, 4

For patients undergoing low-to-moderate bleeding risk surgery, the American College of Chest Physicians suggests resuming apixaban 24 hours after surgery at full therapeutic dose, with examples including laparoscopic cholecystectomy and abdominal hernia repair 3, 5
For patients undergoing high bleeding risk surgery, the European Heart Journal recommends delaying resumption to 48-72 hours after surgery, with examples including major orthopedic surgery and thoracic surgery 3, 4, 5
For patients at high thrombotic risk undergoing major surgery, the Blood journal suggests considering starting with a reduced dose of apixaban (2.5 mg twice daily) for the first 2-3 days, then increasing to full therapeutic dose 6, 5

The European Heart Journal notes that the extent of surgical dissection and tissue trauma should be considered when determining the timing of apixaban resumption 4
The American College of Chest Physicians recommends never resuming full-dose apixaban too early after high bleeding risk surgery (within 24 hours), as this significantly increases major bleeding risk 4, 5

The American College of Chest Physicians suggests assessing surgical bleeding risk, verifying adequate hemostasis, and checking renal function postoperatively before resuming apixaban 3, 4
For low-moderate risk surgery, the American College of Chest Physicians recommends resuming apixaban at 24 hours with full dose 3
For high risk surgery, the Blood journal suggests waiting 48-72 hours and considering a reduced dose initially if high thrombotic risk 6, 5