Contingency tables of patent coronary artery bypass graft at angiography versus detection of coronary bypass flow at transthoracic Doppler echocardiography in the study and in the test population
| Echo | IMA (n=39) | SVG to LAD (n=8) | SVG to RCA (n=33) | SVG to Cx (n=22) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Open | Occluded | Open | Occluded | Open | Occluded | Open | Occluded | ||||||||
| A. Study population (n=45) | |||||||||||||||
| Open | 37 | 0 | 6 | 0 | 17 | 3 | 9 | 2 | |||||||
| Occluded | 0 | 2 | 1 | 1 | 4 | 9 | 5 | 6 | |||||||
| Concordance | 100% | 87.5% | 79% | 68% | |||||||||||
| Doppler identification of open grafts | 100% | 86% | 81% | 64% | |||||||||||
| B.Test population (n=84) | |||||||||||||||
| Open | 59 | 0 | 10 | 0 | 48 | 3 | 35 | 5 | |||||||
| Occluded | 0 | 3 | 1 | 5 | 2 | 15 | 4 | 16 | |||||||
| Concordance | 100% | 94% | 93% | 85% | |||||||||||
| Doppler identification of open grafts | 100% | 91% | 96% | 90% | |||||||||||
Cx, circumflex coronary artery; IMA, internal mammary artery; LAD, left anterior descending coronary artery; RCA, right coronary artery; SVG, saphenous vein graft.