Low-Molecular-Weight Heparin vs Unfractionated Heparin for Perioperative Thromboprophylaxis in Patients With CancerA Systematic Review and Meta-analysis

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Abstract
Patients with cancer undergoing surgical procedures have a higher risk of venous thromboembolism than patients without cancer undergoing similar procedures.1-3 Patients with cancer and venous thromboembolism also have a higher risk of death than patients with cancer alone or with venous thromboembolism alone.4,5 Moreover, thromboprophylaxis might be less effective in patients with cancer owing to the prothrombotic state associated with malignant neoplasms.2,6