As previously discussed, the Prevention du Risque d'Embolie Pulmonaire par Interruption Cave (PREPIC) trial addresses an interesting, but nearly irrelevant, issue regarding the benefits of IVC filters in concomitantly anticoagulated patients. The study by Fullen et al, referenced by our colleagues in their argument, and published during the Nixon administration, randomized patients with hip fractures to receive filters (under pyelographic guidance, no less) and also, not surprisingly, maintains little relevance to today’s practices. In that study, no patient was anticoagulated, despite an average hospital stay > 1 month; moreover, pulmonary embolism was often diagnosed using chest radiograph alone because Dr Hounsfield’s then 2-year old CT scanner was not yet readily available. Therefore, this study confidently demonstrated a benefit of IVC filters over allowing a patient with an acute long bone fracture to wallow sedentary in a hospital bed for > 30 days without anticoagulation. Today’s standard would be to initiate anticoagulation quickly after surgery, not to place an IVC filter. This recommendation undoubtedly benefits patients, lowers health-care costs, and reserves these potentially lifesaving devices for those who genuinely require them.