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Randomised controlled trial
An IVC filter and anticoagulation for 3 months is unlikely to show a benefit over anticoagulation alone for high-risk patients with acute pulmonary embolism
  1. Eric K Hoffer
  1. Department of Radiology, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire, USA
  1. Correspondence to : Dr Eric K Hoffer, Dartmouth Hitchcock Medical Center, Department of Radiology, One Medical Center Drive, Lebanon, NH 03755, USA; hoffer{at}hitchcock.org

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Placement of an inferior vena cava (IVC) filter to prevent pulmonary embolism (PE) is recommended by multidisciplinary consensus guidelines only when anticoagulation is contraindicated, has resulted in a complication or has failed.1 ,2 Oddly, the only prospective randomised long-term filter efficacy study that demonstrated a reduction in the recurrent PE rate at 8-year follow-up (6.3% vs 15.1%) did so in a setting where both filter …

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