title: A prospective comparison of ankle/brachial indices and color duplex imaging in surveillance of the in situ saphenous vein bypass.
abstract: We performed routine postoperative surveillance of 124 consecutive in situ saphenous vein bypasses, using both ankle-brachial indices and color flow duplex imaging. Using a combination of low and high velocity criteria, color flow duplex identified 97% (37/38) of bypass and native artery inflow stenoses subsequently demonstrated by angiography, including 20 of 21 severe stenoses. A reduction in ankle-brachial index by greater than 0.15 identified 43% (16/38) of all stenoses, and only 10 of 21 severe stenoses. Revisional operations were performed in 30 bypasses for abnormalities detected by surveillance, resulting in a 3-year cumulative secondary patency of 87%. Color flow duplex is a superior technique for in situ bypass surveillance when compared to alterations in ankle-brachial indices. The identification of a bypass or inflow stenosis by routine surveillance and its subsequent operative treatment result in satisfactory long-term patency.
authors.affiliation: University of Iowa Hospitals and Clinic, Iowa City.
authors.forename: A L
authors.initials: AL
authors.lastname: Laborde
authors.forename: A Y
authors.initials: AY
authors.lastname: Synn
authors.forename: M J
authors.initials: MJ
authors.lastname: Worsey
authors.forename: T R
authors.initials: TR
authors.lastname: Bower
authors.forename: J J
authors.initials: JJ
authors.lastname: Hoballah
authors.forename: W J
authors.initials: WJ
authors.lastname: Sharp
authors.forename: T F
authors.initials: TF
authors.lastname: Kresowik
authors.forename: J D
authors.initials: JD
authors.lastname: Corson
mesh_terms: D000368:Aged; D000792:Angiography; D000842:Ankle / Q000098:blood supply / Q000503:physiopathology*; D001132:Arm / Q000098:blood supply / Q000503:physiopathology*; D001783:Blood Flow Velocity; D001794:Blood Pressure; D003116:Color; D005260:Female; D005500:Follow-Up Studies; D006083:Graft Occlusion, Vascular / Q000000981:diagnostic imaging* / Q000453:epidemiology / Q000503:physiopathology / Q000628:therapy; D006801:Humans; D008297:Male; D011446:Prospective Studies; D012086:Reoperation; D012501:Saphenous Vein / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000637:transplantation*; D013599:Systole; D013927:Thrombosis / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000503:physiopathology / Q000628:therapy; D013997:Time Factors; D014463:Ultrasonography