title: Percutaneous fluoroscopic removal of a knotted Swan-Ganz catheter in a patient with a persistent left-sided superior vena cava.
abstract: Knotting of intravascular catheters is an uncommon but a well-recognized occurrence. The Swan-Ganz catheter (SGC) is the one that knots most commonly. A case of a knotted SGC is described in a patient with a persistent left-sided superior vena cava, and we propose that the presence of a left-sided superior vena cava is a risk factor for knot formation not previously reported. We review the published work on the risk factors for knot formation and on the techniques used to remove knotted SGC. We describe a technique using a gooseneck snare and Omni Flush catheter (Angiodynamics, Queensbury, NY, USA) to loosen and untie a knotted SGC.
authors.affiliation: Department of Radiology, Austin Health, Melbourne, Victoria, Australia. dineshranatunga@yahoo.com
authors.forename: D  G
authors.initials: D
authors.lastname: Ranatunga
authors.forename: M  G
authors.initials: M
authors.lastname: Richardson
authors.forename: D  M
authors.initials: D
authors.lastname: Brooks
mesh_terms: D000328:Adult; D002407:Catheterization, Swan-Ganz / Q000009:adverse effects*; D020878:Device Removal; D005260:Female; D005547:Foreign Bodies / Q000000981:diagnostic imaging / Q000628:therapy*; D006801:Humans; D011859:Radiography; D014683:Vena Cava, Superior / Q000002:abnormalities* / Q000000981:diagnostic imaging