Coronary artery bypass grafts: improved electron-beam tomography by prolonging breath holds with preoxygenation.

Enzweiler, C N; Kivelitz, D E; Wiese, T H; Taupitz, M; Höhn, S; Borges, A C; Pietsch, L; Dohmen, P et al. · Radiology · 2000

cross_sectional · Level IV

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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.

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