Table 2.
Coronary artery visualization rates as determined by core laboratory stratified by local center.
| CA segment | Site 1 | Site 2 | Site 3 | Site 4 | Site 5 | Site 6 | Site 7 | Site 8 | P-value |
|---|---|---|---|---|---|---|---|---|---|
| N* | 93 | 154 | 80 | 71 | 30 | 51 | 81 | 29 | |
| LMCA (%) | 100 | 98 | 100 | 97 | 100 | 100 | 100 | 97 | 0.99 |
| Proximal LAD (%) | 100 | 100 | 100 | 93 | 100 | 96 | 99 | 93 | 0.89 |
| Distal LAD (%) | 93 | 98 | 98 | 82 | 93 | 84 | 93 | 66 | <.001 |
| Proximal RCA (%) | 98 | 100 | 99 | 92 | 100 | 96 | 100 | 93 | 0.59 |
| Distal RCA (%) | 67 | 92 | 36 | 28 | 77 | 45 | 94 | 38 | <.001 |
| Circumflex (%) | 90 | 92 | 85 | 68 | 90 | 80 | 95 | 79 | 0.005 |
| PD (%) | 51 | 67 | 48 | 39 | 47 | 41 | 78 | 7 | <.001 |
CA: coronary artery; LAD: left anterior descending; LMCA: left main coronary artery; PD: posterior descending; RCA: right coronary artery
*
Counts indicate number of echocardiograms, not number of subjects