Table 2.
Baseline Echocardiographic Variables for the Study Population (n=1019)
| Variable | Total (N=1019) |
|---|---|
| Left ventricular ejection fraction, % | 62±4 |
| Indexed left ventricular end‐diastolic dimension, cm/m2 | 2.02±0.3 |
| Indexed left ventricular end‐systolic dimension, cm/m2 | 1.2±0.3 |
| Maximal left ventricular thickness, cm | 2.0±0.2 |
| Indexed left atrial dimensions, cm/m2 | 2.2±0.4 |
| Diastolic dysfunction | |
| Abnormal relaxation | 937 (92%) |
| Pseudonormal | 71 (7%) |
| Restrictive physiology | 11 (1%) |
| Resting mitral regurgitation | |
| None | 43 (4%) |
| I to II+ | 881 (87%) |
| ≥III+ | 95 (9%) |
| Resting LVOT gradient, mm Hg | 52±42 |
| Resting LVOG gradient >30 mm Hg | 718 (70%) |
| Maximal LVOT gradient, mm Hg | 103±36 |
| LV‐GLS, % | −13.6±4 |
| LV‐GLS | |
| Better than median (≥ −13.7%) | 510 (50%) |
| Worse than median (<13.7%) | 509 (50%) |
| Metabolic exercise echocardiography | 627 (62%) |
| >85% Age‐sex predicted METsa | 255 (41%) |
| Maximum METs achieveda | 6.6±2 |
| Peak oxygen consumption, mL/kg/mina | 21±6 |
| Abnormal BP response to exercisea | 8 (1%) |
BP indicates blood pressure; LV‐GLS, left ventricular global longitudinal strain; LVOT, left ventricular outflow tract; METs, metabolic equivalents of task.
a
Data based upon the subgroup that underwent cardiopulmonary stress echocardiography.