Diagnostic Value of >5.6% Worsening of LVEF by Exercise for Detection of Multivessel CAD
| Criteria for detection of multivessel CAD | No. of diseased vessels | Sensitivity (%) | Specificity (%) | Accuracy (%) | |||
|---|---|---|---|---|---|---|---|
| 0 or 1 | 2 or 3 | ||||||
| Negative | Positive | Negative | Positive | ||||
| Patients with rest LVEF >50% (n = 131) | |||||||
| Perfusion data alone | 90 | 0 | 34 | 7 | 17.1 | 100 | 74.0 |
| Worsening of LVEF by exercise | 79 | 11 | 27 | 14 | 34.1 | 87.8* | 71.0 |
| Perfusion data or worsening of LVEF by exercise (or both) | 79 | 11 | 24 | 17 | 41.5* | 87.8* | 73.3 |
| Patients with rest LVEF ≤50% (n = 51) | |||||||
| Perfusion data alone | 25 | 0 | 15 | 11 | 42.3 | 100 | 70.6 |
| Worsening of LVEF by exercise | 25 | 0 | 20 | 6 | 23.0 | 100 | 60.8 |
| Perfusion data or worsening of LVEF by exercise (or both) | 25 | 0 | 14 | 12 | 46.2 | 100 | 72.5 |
↵* P < 0.02 vs. perfusion data alone.