title: Effect of respiration on angiographic assessment of saphenous vein graft stenoses.
abstract: Coronary angiography in two patients, one 11 yr and the second 15 yr following coronary bypass surgery demonstrated striking focal decrease in vein graft diameter related to the inspiratory phase of the respiratory cycle. The pathophysiology, potential role of mechanical traction, and the clinical implications of this observation are discussed.
authors.affiliation: Mid America Heart Institute, St. Luke's Hospital, Kansas City, Missouri.
authors.forename: L A
authors.initials: LA
authors.lastname: Laramee
authors.forename: G O
authors.initials: GO
authors.lastname: Hartzler
mesh_terms: D000368:Aged; D000800:Angioplasty, Balloon; D017023:Coronary Angiography; D001026:Coronary Artery Bypass; D003327:Coronary Disease / Q000601:surgery*; D006083:Graft Occlusion, Vascular / Q000000981:diagnostic imaging* / Q000628:therapy; D006801:Humans; D008297:Male; D008875:Middle Aged; D012501:Saphenous Vein / Q000637:transplantation*