title: Coronary artery bypass grafts: improved electron-beam tomography by prolonging breath holds with preoxygenation.
abstract: In 45 patients with coronary bypass grafts, the breath-hold interval with and that without preoxygenation was measured. Its effect on depiction of the distal graft anastomosis at electron-beam tomography was evaluated. Preoxygenation prolonged the breath-hold interval in most patients, thereby allowing greater anatomic coverage including more distal anastomoses. Preoxygenation may improve scanning of coronary bypass grafts and increase detectability of graft stenoses.
authors.affiliation: Departments of Radiology, Internal Medicine I, and Cardiovascular Surgery, Charité, Humboldt-Universität Berlin, Schumannstrasse 20/21, 10098 Berlin, Germany. christian.enzweiler@charite.de
authors.forename: C N
authors.initials: CN
authors.lastname: Enzweiler
authors.forename: D E
authors.initials: DE
authors.lastname: Kivelitz
authors.forename: T H
authors.initials: TH
authors.lastname: Wiese
authors.forename: M
authors.initials: M
authors.lastname: Taupitz
authors.forename: S
authors.initials: S
authors.lastname: Höhn
authors.forename: A C
authors.initials: AC
authors.lastname: Borges
authors.forename: L
authors.initials: L
authors.lastname: Pietsch
authors.forename: P
authors.initials: P
authors.lastname: Dohmen
authors.forename: G
authors.initials: G
authors.lastname: Baumann
authors.forename: B
authors.initials: B
authors.lastname: Hamm
mesh_terms: D000328:Adult; D000368:Aged; D001026:Coronary Artery Bypass; D003327:Coronary Disease / Q000000981:diagnostic imaging* / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010100:Oxygen / Q000008:administration & dosage; D012119:Respiration; D018709:Statistics, Nonparametric; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D010100:Oxygen