title: Incidence and outcome of radial artery infections following cardiac surgery.
abstract: BACKGROUND
  Radial artery infections secondary to catheterization for blood pressure monitoring are rare but potentially serious complications. The objective of the study was to evaluate the incidence, the risk factors and the evolution of radial artery infections following cardiac surgery.
  
  
  METHODS
  A retrospective review of 8300 patients undergoing cardiac surgery between 1998 and 2002 at the Montreal Heart Institute (MHI) was undertaken. All patients with superficial radial artery infections, infected radial artery pseudoaneurysms, and arterial catheter-related bacteremia were considered using prospective global surveillance of all nosocomial infections over the study period by an infection control nurse.
  
  
  RESULTS
  Thirteen patients with radial infections were encountered (0.2%) with bacteremia occurring in 9 patients (0.15%). Five patients developed infected radial artery pseudoaneurysms (0.05%) and 5 patients developed subsequent sternal wound infections. Two patients died in their early postoperative evolution. Mean patient age was 67 years old and mean duration of cannulation was 5.8 days. Only 1 patient had diabetes. Seven of 13 patients were positive for Staphylococcus aureus (54%). All patients had undergone cardiopulmonary bypass (CPB) for various procedures. All superficial infections responded well to antibiotic therapy. Early surgical intervention is essential in cases of infected radial artery pseudoaneurysms.
  
  
  CONCLUSIONS
  The postoperative state and cardiopulmonary bypass put patients at risk for infectious complications. Strict systematic changing of arterial lines on a timely basis is unwarranted in our opinion. A high suspicion index, aggressive surgical treatment of bacterial arteritis and appropriate intravenous antibiotics are essential to improve the prognosis.
authors.affiliation: Research Center and Department of Cardiovascular Surgery, Montreal, Quebec, Canada
authors.forename: Ismaïl
authors.initials: I
authors.lastname: El-Hamamsy
authors.forename: Nicolas
authors.initials: N
authors.lastname: Dürrleman
authors.forename: Louis Mathieu
authors.initials: LM
authors.lastname: Stevens
authors.forename: Tack Ki
authors.initials: TK
authors.lastname: Leung
authors.forename: Sylvie
authors.initials: S
authors.lastname: Theoret
authors.forename: Michel
authors.initials: M
authors.lastname: Carrier
authors.forename: Louis P
authors.initials: LP
authors.lastname: Perrault
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001424:Bacterial Infections / Q000453:epidemiology* / Q000209:etiology*; D006348:Cardiac Surgical Procedures / Q000009:adverse effects*; D006801:Humans; D015994:Incidence; D008875:Middle Aged; D011379:Prognosis; D017534:Radial Artery; D012189:Retrospective Studies; D012307:Risk Factors; D014652:Vascular Diseases / Q000453:epidemiology / Q000209:etiology