Baseline Characteristics, Known Risk Factors, Stress Test Parameters, and Clinical PET/CT Diagnosis
| Parameter | Adenosine | Regadenoson | P |
| Baseline characteristics | |||
| Sex | 0.901 | ||
| Male | 15 (50%) | 15 (48%) | |
| Female | 15 (50%) | 16 (52%) | |
| Age (y) | 68 ± 10 | 67 ± 9 | 0.608† |
| Body mass index | 28.1 ± 4.8 | 27.1 ± 4.9 | 0.116 |
| Duke Clinical Score (%)* | 62 ± 33 | 55 ± 32 | 0.243 |
| Risk factors | |||
| Diabetes mellitus | 0 (0.0%) | 6 (19.4%) | 0.012 |
| Family history of coronary artery disease | 7 (23.3%) | 8 (25.8%) | 0.824 |
| Hypertension | 18 (60.0%) | 14 (45.2%) | 0.250 |
| Smoking | 4 (13.3%) | 6 (19.4%) | 0.529 |
| Previous myocardial infarction | 13 (43.3%) | 5 (16.1%) | 0.021 |
| Previous percutaneous coronary intervention | 12 (40.0%) | 6 (19.4%) | 0.080 |
| Previous coronary artery bypass grafting | 2 (6.7%) | 2 (6.5%) | 0.973 |
| Stress test parameters | |||
| Maximum heart rate during stress (bpm) | 91 ± 18 | 94 ± 18 | 0.704 |
| Percentage heart rate of maximum | 59.1 ± 9.9 | 61.1 ± 12.0 | 0.367 |
| Systole at peak stress (mm Hg) | 125.1 ± 15.8 | 136.1 ± 14.8 | 0.602 |
| Diastole at peak stress (mm Hg) | 67.5 ± 10.5 | 71.0 ± 9.5 | 0.611 |
| PET/CT results | |||
| No ischemia or infarction | 17 (56.7%) | 22 (70.9%) | |
| Ischemia | 10 (33.3%) | 3 (9.7%) | 0.141‡ |
| Infarction | 3 (10.0%) | 6 (19.4%) | |
| Motion artifacts, static stress | 14 (46.7%) | 9 (30.0%) | 0.192 |
↵* In both groups, Duke Clinical Score was missing in 2 patients.
↵† Independent-samples t tests.
↵‡ χ2 tests.
Qualitative data are expressed as numbers followed by percentages in parentheses; continuous data are expressed as mean ± SD. Statistical analyses were done using Mann–Whitney tests by default, or as indicated.