DOPPLER SONOGRAPHIC EXAMINATION OF THE INTERNAL MAMMARY ARTERY GRAFT - COMPARISON OF SUPRACLAVICULAR AND HIGH INTERCOSTAL SIGNALS

In a group of 22 patients, Doppler signals from the proximal part of t he internal mammary artery graft were studied from the supraclavicular fossa as well as from the high intercostal spaces. An adequate signal was found more often from the supraclavicular position. Both position s showed higher peak systolic than peak diastolic velocities. Transiti on of the flow to the typical coronary flow pattern with higher peak d iastolic velocity seems to occur in lower parts of the graft.