Evidence brief
Prevention of VTE in Orthopedic Surgery Patients: CHEST Guideline and Expert Panel Report
Recommends pharmacological prophylaxis for major orthopaedic surgery
LMWH, fondaparinux, low-dose UFH, aspirin, vitamin K antagonists, or rivaroxaban acceptable
Minimum 10-14 days prophylaxis, extended to 35 days for hip/knee arthroplasty
Mechanical prophylaxis alone acceptable when bleeding risk high
Timing of first dose balanced against bleeding risk
CHEST guidelines provide framework for VTE prevention in orthopaedic surgery. They support pharmacological prophylaxis as default but allow flexibility based on bleeding risk and patient factors.
Know CHEST recommendations: LMWH most commonly used in Australia (enoxaparin 40mg daily or 0.5mg/kg BD). Duration: minimum 10-14 days, extend to 35 days for THA/TKA. Aspirin emerging as acceptable alternative. Discuss balancing bleeding vs thrombosis risk.
Level I
Systematic review of RCTs or high-quality RCT