Teaching – Anticoagulation and Heparin Platelets bind to subendothelial collagen through VWF . Prophylaxis using low-dose un fractionated heparin has been shown to reduce the incidence of fatal PEs by 50% Please leave this field emptyBe Aware of New Questions & Tests! We’d love to keep you updated with our latest questions and tests We don’t spam! Check your inbox or spam folder to confirm your subscription.