Objective: To review inferior vena cava (IVC) filter retrieval practice at our institution, the Royal London Hospital, and measure changes following a quality improvement intervention. IVC filters are a preventive treatment for pulmonary embolism when anticoagulation is ineffective/contraindicated. Unless permanent filtration is required, all filters should undergo attempted retrieval within manufacturer's recommendations with a success rate of ≥80 %.
Methods: Retrospective audit of filters inserted between 2011 and 2014, followed by a quality improvement intervention and a second audit between 2015 and 2017. Clinical-radiological data were analysed using the Picture Archiving and Communication System and electronic patient records.
Results: During the first audit, filter retrieval was attempted in 92% of cases, of which 82% underwent the procedure within manufacturer's recommendations and 86% were successful. During the second audit, an improvement across indicators was seen. Retrieval increased by 3% and was attempted in 95% of cases (92% of which were within manufacturer's guidelines). Rate of retrievals within manufacturer's guidelines increased by 10%. Filter retrieval success rate increased by 11% - to 97%.
Conclusions: IVC filter retrieval practice at a single institution can be improved by implementing a simple audit intervention.
Advances in knowledge: Filter retrieval practice has clinical and medicolegal implications. A simple quality intervention can substantially improve overall practice.