title: Vascular laboratory prediction of pedal pressure following femoropopliteal bypass.
abstract: This study examines the hypothesis that postoperative ankle-brachial pressure index (postop ABI) can be accurately predicted using noninvasive preoperative segmental leg pressure measurements. Seventy-three patients who underwent successful reverse autogenous vein femoropopliteal bypass and who had pre- and postoperative segmental leg pressure measurements were examined. Predicted postop ABI was estimated using the following formula: Postop ABI = 1 + (Preop ABI) - (Preop BKI). (BKI = below-knee brachial pressure index). Using this formula, 56 out of 73 (81%) patients had a measured postop ABI +/- 20% of predicted postop ABI. Five out of 73 (7%) patients had postop ABI less than 80% predicted, while 12 out of 73 (16%) patients had postop ABI greater than 120% of predicted. All patients with postop ABI greater than 120% of predicted had apparent tibial artery occlusive disease as indicated by preoperative gradients (BKI-ABI) greater than 0.15.
authors.affiliation: Division of Vascular Surgery, Oregon Health Sciences University, Portland 97201.
authors.forename: E S
authors.initials: ES
authors.lastname: Phinney
authors.forename: J M
authors.initials: JM
authors.lastname: Edwards
authors.forename: M B
authors.initials: MB
authors.lastname: Herring
authors.forename: L M
authors.initials: LM
authors.lastname: Taylor
authors.forename: J M
authors.initials: JM
authors.lastname: Porter
mesh_terms: D000714:Anastomosis, Surgical; D000792:Angiography; D000842:Ankle / Q000098:blood supply*; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D001795:Blood Pressure Determination / Q000379:methods*; D005263:Femoral Artery / Q000502:physiology / Q000601:surgery*; D006439:Hemodynamics; D006801:Humans; D011150:Popliteal Artery / Q000502:physiology / Q000601:surgery*; D011184:Postoperative Period; D012501:Saphenous Vein / Q000637:transplantation