title: Prospective screening for postoperative deep venous thrombosis in patients undergoing infrainguinal revascularization.
abstract: OBJECTIVE
  The incidence of deep venous thrombosis (DVT) in patients undergoing infrainguinal bypass graft procedures has not been well documented, and the need for routine prophylaxis remains controversial. The purpose of this study was to prospectively evaluate the risk of postoperative DVT complicating infrainguinal revascularization.
  
  
  METHODS
  Seventy-four patients undergoing infrainguinal bypass graft procedures during a 12-month period were prospectively screened for DVT. Bilateral lower extremity venous duplex scan imaging was performed preoperatively and within 1 week and 6 weeks, postoperatively. Routine DVT prophylaxis was not used, with anticoagulation reserved for specific indications.
  
  
  RESULTS
  Of the 74 patients screened, three patients (4.1%) had DVT identified on preoperative venous duplex scan imaging and were excluded from the study. Of the remaining 71 patients enrolled, only two patients (2.8%) had postoperative DVT. Postoperative DVT was ipsilateral to the bypass graft extremity in both patients, with involvement of the peroneal vein in one patient and the femoral vein in the other. Although routine prophylaxis was not used, 18 of these patients (25%) were anticoagulated for other indications, with DVT occurring in one patient (5.6%). Of the remaining 53 patients who did not receive postoperative anticoagulation, only one patient (1.8%) had DVT.
  
  
  CONCLUSIONS
  According to this prospective study, the risk of postoperative DVT in patients undergoing infrainguinal revascularization is low. Routine prophylaxis is not recommended, with postoperative anticoagulation reserved for specific indications.
authors.affiliation: Division of Vascular Surgery, Department of Surgery, University of North Carolina, USA. marc.passman@surgery.mc.vanderbilt.edu
authors.forename: M A
authors.initials: MA
authors.lastname: Passman
authors.forename: M A
authors.initials: MA
authors.lastname: Farber
authors.forename: W A
authors.initials: WA
authors.lastname: Marston
authors.forename: R E
authors.initials: RE
authors.lastname: Carlin
authors.forename: L V
authors.initials: LV
authors.lastname: Owens
authors.forename: C B
authors.initials: CB
authors.lastname: Burnham
authors.forename: S J
authors.initials: SJ
authors.lastname: Burnham
authors.forename: B A
authors.initials: BA
authors.lastname: Keagy
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D007511:Ischemia / Q000000981:diagnostic imaging / Q000601:surgery*; D007866:Leg / Q000098:blood supply*; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D011446:Prospective Studies; D018616:Ultrasonography, Doppler, Duplex; D014656:Vascular Surgical Procedures; D020246:Venous Thrombosis / Q000209:etiology*