Table 2.
Resting and DSE characteristics of the study population
| Resting echocardiographic data | |
|---|---|
| LVEF, % | 58 ±4 |
| Indexed LVESD, cm/m2 | 1.5 ±0.2 |
| Indexed LA area, cm/m2 | 2.1 ±0.3 |
| Moderate mitral regurgitation | 5 (1.0) |
| Moderate aortic stenosis | 5 (1.0) |
| Mitral valve E/e' ratio | 8.2 ±3 |
| Moderate tricuspid regurgitation | 9 (2.0) |
| RVSP, mm Hg | 30 ± 8 |
| DSE data | |
| Resting heart rate, bpm | 74 ± 13 |
| Resting SBP, mm Hg | 124 ± 21 |
| % Maximum predicted heart rate achieved on DSE | 84 ± 9 |
| Peak achieved heart rate, bpm | 135 ± 16 |
| Peak achieved SBP, mm Hg | 176 ± 16 |
| Maximum RPP | 18 489 ± 4007 |
| Response to DSE | |
| Ischemic | 4 (0.9) |
| Nondiagnostic (nonachievement of heart rate) | 96 (21) |
| Normal | 360 (78) |
Abbreviations: DSE, dobutamine stress echocardiography; LA, left atrial; LVEF, left ventricular ejection fraction; LVESD, left ventricular end‐systolic dimension; RPP, rate pressure product; RVSP, right ventricular systolic pressure; SBP, systolic blood pressure; SD, standard deviation.
Data are presented as n (%) or mean ± SD.