Table 2.
Stress Testing Indication and Results (N = 69 885)
| Stress Variable | Value |
|---|---|
| Indication for stress testing | |
| Chest pain | 33 099 (47.7%) |
| Rule out ischemia | 7486 (10.7%) |
| Shortness of breath | 6365 (9.1%) |
| Risk stratification for known coronary disease | 4679 (6.7%) |
| Risk factors only | 3642 (5.2%) |
| Prior abnormal test (prior stress test) | 3061 (4.4%) |
| Palpitation | 2151 (3.1%) |
| Dizziness | 1231 (1.8%) |
| Research screening | 1587 (2.3%) |
| Preoperation | 1478 (2.1%) |
| Other | 5106 (7%) |
| Resting heart rate, bpm, median (IQR) | 72 (17) |
| Resting SBP, mm Hg, median (IQR) | 130 (24) |
| Resting DBP, mm Hg, median (IQR) | 80 (14) |
| Peak heart rate, bpm, median (IQR) | 151 (28) bpm |
| Peak SBP, mm Hg, median (IQR) | 178 (36) |
| Peak DBP, mm Hg, median (IQR) | 82 (14) |
| Peak rate pressure product, median (IQR) | 26 660 (7720) bpm |
| Percent achieving predicted maximal HR, median (IQR) | 91 (11) |
| METs achieved, median (IQR) | 10 (3) |
| Achieved 85% of predicted maximal HR, n (%) | 51 870 (74.2) |
| Achieved 100% of predicted maximal HR, n (%) | 9664 (13.8) |
| Normal resting ECG, n (%), n = 63 582 | 31 547 (50) |
Abbreviations: DBP, diastolic blood pressure; ECG, electrocardiography; HR, heart rate; IQR, interquartile range; METs, metabolic equivalents; SBP, systolic blood pressure.