In an 86-year-old female with a right intertrochanteric femur fracture who is taking clopidogrel 150 mg daily and aspirin 75 mg daily, how should her antiplatelet therapy be managed perioperatively?

Perioperative Antiplatelet Management for Hip Fracture Surgery

Stop clopidogrel 5 days before surgery while continuing aspirin throughout the perioperative period, and proceed with surgery as soon as safely possible after the 5-day clopidogrel washout. This approach balances bleeding risk against the critical need for early hip fracture repair and minimizes cardiovascular thrombotic complications.

Recommended Management Strategy

Immediate Actions

Continue aspirin 75 mg daily without interruption 1. The most recent ACCP 2022 guidelines explicitly support aspirin continuation for patients undergoing non-cardiac surgery, and hip fracture repair falls into the intermediate hemorrhagic risk category where aspirin monotherapy can be safely maintained 1.

Stop clopidogrel immediately upon presentation 1, 2. The 2022 ACCP guidelines recommend a 5-day interruption for clopidogrel before surgery 1. The 2018 French GIHP guidelines similarly recommend stopping clopidogrel 5 days before surgery 2.

Surgical Timing

Proceed with surgery 5 days after the last clopidogrel dose 1. While hip fracture guidelines generally recommend surgery within 24-48 hours, this patient's dual antiplatelet therapy necessitates a brief delay. The evidence strongly supports that:

• Continuing clopidogrel significantly increases major bleeding risk without clear antithrombotic benefit in orthopedic surgery 2
• A 5-day washout allows adequate platelet function recovery (clopidogrel irreversibly inhibits platelets with a 10-day platelet lifespan) 1, 3
• Recent meta-analyses show early surgery in hip fracture patients on antiplatelet therapy (within 5 days of stopping) is safe and associated with lower overall complications compared to further delays 4

Critical Cardiovascular Risk Assessment

Determine why this patient is on dual antiplatelet therapy - this is essential:

• If coronary stent present: Identify stent type and timing

  • Drug-eluting stent <12 months: This is high-risk - consider multidisciplinary discussion with cardiology about continuing both agents or using alternative strategies 5
  • Bare metal stent <6 weeks: Also high-risk - similar considerations apply 6
  • If stent >12 months (DES) or >6 weeks (BMS): Proceed with the 5-day clopidogrel hold while continuing aspirin 6

• If no stent but recent acute coronary syndrome (<6 weeks): This represents very high thrombotic risk - strongly consider continuing both agents and accepting increased bleeding risk 5

• If stable coronary disease or stroke prevention: The standard 5-day clopidogrel hold with aspirin continuation is appropriate 1

Anesthetic Considerations

Neuraxial anesthesia (spinal/epidural) is contraindicated while on clopidogrel 2. The 2018 French guidelines explicitly state that deep neuraxial blocks should not be performed unless clopidogrel was discontinued 5 days prior 2. After the 5-day washout, neuraxial anesthesia becomes feasible with aspirin alone 7.

General anesthesia is the safer option if surgery cannot wait 5 days and clopidogrel is still active.

Perioperative Blood Management

Prepare for potential increased bleeding:

• Type and crossmatch blood preoperatively
• Have tranexamic acid available (1g IV at induction, repeat if needed) - this is particularly effective in reducing bleeding in hip fracture surgery 8
• Platelet transfusion is generally NOT recommended prophylactically 9. Reserve platelet transfusion only for clinically significant bleeding that doesn't respond to standard hemostatic measures 8
• The 2019 French guidelines note that routine platelet transfusion for clopidogrel reversal lacks evidence of benefit and may increase thrombotic risk 9

Postoperative Antiplatelet Resumption

Resume aspirin immediately postoperatively (within 6-24 hours) once hemostasis is secure 1.

Resume clopidogrel 24-48 hours postoperatively 1, 9. The 2022 ACCP guidelines recommend resuming P2Y12 inhibitors within 24 hours at maintenance dose 1. Consider a 300mg loading dose if high cardiovascular risk (recent stent, recent ACS) 5.

VTE Prophylaxis

Use mechanical prophylaxis (intermittent pneumatic compression) immediately 1.

Add pharmacologic VTE prophylaxis with low-molecular-weight heparin (enoxaparin 40mg daily or dalteparin 5000 IU daily) starting 24-72 hours postoperatively once hemostasis is established 1. Hip fracture carries high VTE risk, and the combination of aspirin plus LMWH provides adequate prophylaxis.

Common Pitfalls to Avoid

1. Do not delay surgery beyond 5 days after stopping clopidogrel - the mortality and morbidity from delayed hip fracture surgery increases significantly after 48 hours, and certainly after 5 days 4, 10

2. Do not stop aspirin - the cardiovascular risk of aspirin withdrawal likely exceeds the modest bleeding risk, especially in this elderly patient with cardiovascular disease requiring dual therapy 1, 8

3. Do not use bridging anticoagulation (therapeutic LMWH) as a substitute for antiplatelet therapy - this increases bleeding risk without providing equivalent antiplatelet protection 2

4. Do not perform neuraxial anesthesia if clopidogrel was taken within 5 days - risk of spinal hematoma 2

5. Do not routinely transfuse platelets prophylactically - limited evidence of benefit and potential thrombotic harm 9

Special Consideration for This Patient

The unusually high clopidogrel dose (150mg) suggests either:

• Recent loading or maintenance dose escalation for acute coronary syndrome
• Poor metabolizer status requiring higher dosing

This strengthens the recommendation to involve cardiology to clarify the indication and assess whether the 5-day delay is acceptable from a cardiac standpoint, or whether this patient requires continued dual antiplatelet therapy through surgery despite bleeding risk.