Table 2 Six-week ETT results
From: Utility of routine exercise treadmill testing early after percutaneous coronary intervention
| Â | Positive ETT (N = 32) | Indeterminate ETT (N = 24) | Negative ETT (N = 80) |
|---|---|---|---|
Weeks after index PCI (Mean ± S.D.) | 6.6 ± 2.9 | 7.1 ± 2.5 | 6.4 ± 1.8 |
% Patients on anti-anginals* | 90.3 | 95.8 | 82.3 |
   Beta-blockers | 80.6 | 87.5 | 77.2 |
   Calcium-channel blockers | 22.5 | 33.3 | 23.1 |
   Long-acting nitrates | 25.0 | 25.0 | 23.1 |
Baseline ECG (%) | Â | Â | Â |
   Normal | 54.8 | 50.0 | 59.1 |
   Non-specific ST-T abnormalities | 12.9 | 12.5 | 7.6 |
   Previous MI†| 25.8 | 29.2 | 22.7 |
   LBBB | 3.2 | 4.2 | 0.0 |
   RBBB | 0.0 | 4.2 | 6.1 |
   LVH | 3.2 | 0.0 | 3.0 |
   Adequate for diagnosis of ischemia‡ | 87.1 | 83.3 | 95.5 |
% MPHR achieved (Mean ± S.D.) | 88.0 ± 17.4 | 91.1 ± 26.6 | 92.0 ± 18.0 |
% achieving ≥ 85% MPHR | 65.6 | 50.0 | 72.5 |
Number of METS achieved (Mean ± S.D.) | 8.4 ± 2.5 | 9.5 ± 3.6 | 9.5 ± 2.9 |
Rate-Pressure Product (Mean ± S.D.) | 23,936 ± 5,934 | 23,683 ± 5,612 | 25,247 ± 6,623 |
Duke Treadmill Score | 0.7 ± 5.0 | 5.5 ± 4.3 | 7.8 ± 3.7 |
Development of exertional angina: | Â | Â | Â |
   Yes | 56.3 | 0.0 | 0.0 |
   No | 37.5 | 66.7 | 100 |
   Indeterminate | 6.2 | 33.3 | 0.0 |
Reversible ischemia by ECG: | Â | Â | Â |
   Yes | 87.5 | 0.0 | 0.0 |
   No | 9.4 | 12.5 | 100 |
   Indeterminate | 3.1 | 87.5 | 0.0 |