title: Right atrial thrombus in an asymptomatic hemodialysis patient with malfunctioning catheter and patent foramen ovale.
abstract: The creation of an accurate functioning arteriovenous fistula has been a long-lasting problem in the hemodialysis setting. In spite of recent guidelines and largely because of the old age of the current dialysis population and a high incidence of diabetes mellitus, atherosclerosis, and related vascular problems, it is not always possible to create an adequate fistula. In that case, long-term tunneled indwelling central vein catheters are a frequently used alternative. Of the many possible complications related to venous access in hemodialysis patients, catheter dysfunction is the most prevalent. We report a 23-year-old female hemodialysis patient in whom such malfunctioning was followed by echocardiography that revealed a large right atrial thrombus (RAT) in close contact to the tip of a long-term indwelling catheter in the presence of a patent foramen ovale. Although RAT is a rare complication in hemodialysis patients, it has very specific therapeutic implications. The present patient underwent a successful surgical atrial thrombectomy. Our experience underscores that in cases of malfunctioning catheter, echocardiographic screening is mandatory.
authors.affiliation: Nephrology Section of Department of Internal Medicine, University of Ghent, Ghent, Belgium.
authors.forename: S
authors.initials: S
authors.lastname: van Laecke
authors.forename: A
authors.initials: A
authors.lastname: Dhondt
authors.forename: J
authors.initials: J
authors.lastname: de Sutter
authors.forename: R
authors.initials: R
authors.lastname: Vanholder
mesh_terms: D000328:Adult; D002408:Catheters, Indwelling / Q000009:adverse effects*; D003328:Coronary Thrombosis / Q000000981:diagnostic imaging / Q000209:etiology*; D017548:Echocardiography, Transesophageal; D005260:Female; D006344:Heart Septal Defects, Atrial / Q000150:complications*; D006801:Humans; D006435:Renal Dialysis / Q000009:adverse effects*