Most Frequent Inappropriate Indications
| Indication | Inappropriate studies (%) | % of total studies |
| Detection of CAD; asymptomatic, low CHD risk* | 44.5 | 6.4 |
| Asymptomatic, postrevascularization; <2 y after PCI, symptoms before PCI | 23.8 | 3.4 |
| Evaluation of chest pain, low probability; interpretable ECG and able to exercise | 16.1 | 2.3 |
| Asymptomatic/stable symptoms, known CAD < 1 y after catheterization or abnormal prior SPECT findings | 3.9 | 0.6 |
| Preoperative assessment; low-risk surgery | 3.7 | 0.5 |
| Total† | 92.0 | 13.2 |
↵* CHD risk was determined by Framingham Risk score.
↵† Remaining 8% of inappropriate studies are contained among the remaining inappropriate indications.
CAD = coronary artery disease; CHD = coronary heart disease; PCI = percutaneous coronary intervention; ECG = electrocardiogram.
Reprinted with permission of (16).