title: Non-invasive assessment of graft patency using transcutaneous Doppler echocardiography for the validation of functional improvement after PTCA of the LAD via internal thoracic artery graft.
abstract: Percutaneous transluminal coronary angioplasty (PTCA) of a native coronary artery via internal thoracic artery (ITA) graft after bypass surgery is a relatively rare procedure. Our current study evaluates the flow velocity patterns of the graft before and after PTCA. After intervention the mean diastolic flow velocity increased under rest and stress conditions. In addition, the graft patency was proved not before control angiography after 6 months. It could be verified that the measurement of flow velocity patterns under rest and stress conditions is a useful non-invasive procedure for monitoring long-term patency and PTCA-results of this vessel.
authors.affiliation: Department of Cardiology, Pneumology and Angiology, Heinrich-Heine-University, Düsseldorf, Germany.
authors.forename: R G
authors.initials: RG
authors.lastname: Marx
authors.forename: T W
authors.initials: TW
authors.lastname: Jax
authors.forename: G
authors.initials: G
authors.lastname: Plehn
authors.forename: C M
authors.initials: CM
authors.lastname: Schannwell
authors.forename: F C
authors.initials: FC
authors.lastname: Schoebel
authors.forename: B E
authors.initials: BE
authors.lastname: Strauer
mesh_terms: D015906:Angioplasty, Balloon, Coronary / Q000379:methods*; D001783:Blood Flow Velocity; D017023:Coronary Angiography; D001026:Coronary Artery Bypass / Q000009:adverse effects / Q000379:methods; D003327:Coronary Disease / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D015150:Echocardiography, Doppler / Q000379:methods*; D005080:Exercise Test; D006083:Graft Occlusion, Vascular / Q000000981:diagnostic imaging* / Q000628:therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012680:Sensitivity and Specificity; D013895:Thoracic Arteries / Q000637:transplantation*; D014654:Vascular Patency / Q000502:physiology*