Background: Retained intravascular catheter fragments (RICF) are a rare complication of implantable vascular access device (IVAD) removal for which there is limited understanding of aetiology. There is a varied approach to management among the currently published literature.
Aims: The aim of this study was to establish incidence, risk factors, and outcomes for RICF after attempted removal of IVADs.
Methods: A single institution retrospective review was undertaken of individuals ≤ 25 years undergoing removal of IVADs from October 2014 to June 2019. Risk factors for RICF were explored using univariable logistic and Cox regression analysis.
Results: Six cases of RICF were identified among 654 line removal episodes (0.92% (95% CI 0.37-2%)) in patients aged 6-17 years (median 11, IQR 6-15 years). The main risk factor for RICF at removal was found to be line duration (OR 3.5/year, 95% CI 2.1-5.84, p < 0.0001). No RICFs occurred in lines indwelling for < 3 years. Five children with RICF ≤ 16 years were discussed with a paediatric cardiothoracic centre, and all were left in situ with 4 remaining asymptomatic. One had the fragment tip extruded through a wound, which required trimming. The other (17 years of age) developed an infected sinus for which partial removal with open excision followed by full removal with endovascular snare retrieval was performed by the adult vascular surgeons.
Conclusion: IVADs in-situ for longer than a three-year period are at greatest risk of RICF upon removal. Management with transfixion of line fragments to surrounding muscle seems prudent while invasive attempts at retrieval appear unwarranted.
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