Predictors of Attempted Inferior Vena Cava Filters Retrieval.

"Collect in medical records :~* Filter's retrieval rate~* Complications of vena cava filters~* Predictive factors of attempted inferior vena cava filters retrieval: age, the distance between the patient's home and the hospital, the indication or not given by the therapeutic medicine department, patients referred by external structures, patients whose filter was installed during the medical on-call period, the absence of a written request for filter placement, the presence of active neoplasia at the time of filter placement, a peri-surgical context."