title: Perigraft air, fever, and leukocytosis after endovascular repair of abdominal aortic aneurysms.
abstract: BACKGROUND
  The postimplantation syndrome of fever and leukocytosis after endovascular repair of infrarenal aortic aneurysms has not been previously characterized and its etiology is not known.
  
  
  METHODS
  We studied the first 12 patients who underwent successful endovascular repair of infrarenal aortic aneurysms with Dacron-covered stent-grafts, as part of an ongoing phase II clinical trial. Sepsis syndrome evaluations (physical examination, urinalysis, chest radiograph, urine cultures, and blood cultures) were performed for all patients with postoperative temperature (T) greater than 101.4 degrees F. Computed tomography scans of the abdomen were performed, as part of the clinical protocol, on postoperative days 2 and 30.
  
  
  RESULTS
  Fever (T > 101.4 degrees F) was seen in 8 of 12 (67%) patients (P < 05). An additional 2 of 12 (17%) patients had low-grade fevers (100.3 degrees F, 100.6 degrees F). Only 2 of 12 (17%) patients remained afebrile postoperatively. Leukocytosis with counts over 11,000 white blood cells (WBC)/dL was observed in 7 of 12 (58%) patients (P < 05). Sepsis evaluations failed to identify any source of infection in 11 of 12 (97%) patients. Computed tomography scan evidence of perigraft air was noted in 8 of 12 (67%) patients. All patients were afebrile, had normal white blood cell counts, and were discharged within 1 week postoperatively. There has been no evidence of graft infection after 1 to 6 months of follow-up.
  
  
  CONCLUSIONS
  Fever and leukocytosis after stent-graft repair of aortic aneurysms does not represent evidence of systemic or graft infection and is not clearly related to nonspecific causes of postoperative fever and leukocytosis. Moreover, the finding of early postoperative perigraft air is not necessarily an indication of graft infection even when concurrently present with fever and leukocytosis.
authors.affiliation: Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia 19104, USA.
authors.forename: O C
authors.initials: OC
authors.lastname: Velázquez
authors.forename: J P
authors.initials: JP
authors.lastname: Carpenter
authors.forename: R A
authors.initials: RA
authors.lastname: Baum
authors.forename: C F
authors.initials: CF
authors.lastname: Barker
authors.forename: M
authors.initials: M
authors.lastname: Golden
authors.forename: F
authors.initials: F
authors.lastname: Criado
authors.forename: A
authors.initials: A
authors.lastname: Pyeron
authors.forename: R M
authors.initials: RM
authors.lastname: Fairman
mesh_terms: D000388:Air; D017544:Aortic Aneurysm, Abdominal / Q000601:surgery*; D001807:Blood Vessel Prosthesis; D019917:Blood Vessel Prosthesis Implantation; D005334:Fever / Q000209:etiology; D006801:Humans; D007964:Leukocytosis / Q000209:etiology; D011093:Polyethylene Terephthalates; D011183:Postoperative Complications / Q000209:etiology*; D012189:Retrospective Studies; D015607:Stents
chemical_list: D011093:Polyethylene Terephthalates