title: Radial Artery Pseudoaneurysm.
abstract: OBJECTIVE
  To review the causes, clinical course, and management of patients with catheter-associated radial artery pseudoaneurysm (PSA).
  
  
  METHODS
  We reviewed all patients diagnosed with radial artery PSA resulting from arterial line placement or radial artery access for cardiac procedures from 2010 to 2015.
  
  
  RESULTS
  We identified 11 cases: 5 caused by arterial lines and 6 by cardiac procedures. The diagnosis was confirmed by duplex ultrasound in all cases; PSA size ranged from less than 1 cm to 5 cm in diameter. Spontaneous thrombosis (over a mean of 27 days) occurred in 4 patients; each PSA was smaller than 3 cm. Surgery was performed in 7 patients with excision of the stalk and repair of the artery as the most common procedure. Only one case was performed emergently for acute carpal tunnel syndrome. Complications occurring owing to either the PSA or the treatment were recorded in 5 patients.
  
  
  CONCLUSIONS
  Spontaneous thrombosis may occur in smaller lesions over a few weeks. When required, surgery to evacuate the hematoma and repair the artery was effective in all cases.
  
  
  METHODS
  Therapeutic IV.
authors.affiliation: Department of Orthopaedic Surgery, Hand Surgery Service, Massachusetts General Hospital, Harvard Medical School, Boston, MA.
authors.forename: Rick
authors.initials: R
authors.lastname: Tosti
authors.affiliation: Department of Orthopaedic Surgery, Hand Surgery Service, Massachusetts General Hospital, Harvard Medical School, Boston, MA.
authors.forename: Sezai
authors.initials: S
authors.lastname: Özkan
authors.affiliation: Division of Cardiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA.
authors.forename: Robert M
authors.initials: RM
authors.lastname: Schainfeld
authors.affiliation: Division of Plastic and Reconstructive Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA. Electronic address: keberlin@partners.org.
authors.forename: Kyle R
authors.initials: KR
authors.lastname: Eberlin
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D017541:Aneurysm, False / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery* / Q000628:therapy; D002406:Catheterization, Peripheral / Q000009:adverse effects*; D000072226:Computed Tomography Angiography; D005260:Female; D006406:Hematoma / Q000000981:diagnostic imaging / Q000209:etiology / Q000628:therapy; D006801:Humans; D008297:Male; D008875:Middle Aged; D017534:Radial Artery / Q000000981:diagnostic imaging / Q000293:injuries / Q000601:surgery*; D012189:Retrospective Studies; D013927:Thrombosis / Q000000981:diagnostic imaging / Q000209:etiology / Q000628:therapy; D014463:Ultrasonography
keywords: Radial artery; catheter-associated pseudoaneurysm; pseudoaneurysm