Age Differences Between Poststress SFx and DFx Parameters
| Parameter | Age group | ||||
|---|---|---|---|---|---|
| <50 y (n = 36) | 50–59 y (n = 29) | ≥60 y (n = 25) | |||
| HR (bpm) | 76.4 ± 7.6 | 72.0 ± 7.2 | 71.6 ± 8.5 | ||
| LVEF (%) | 62.5 ± 5.8 | 63.7 ± 6.4 | 65.6 ± 3.6 | ||
| EDV (mL) | 106.2 ± 22.0 | 110.3 ± 19.6 | 100.2 ± 18.9 | ||
| ESV (mL) | 40.4 ± 12.2 | 40.8 ± 12.6 | 34.8 ± 9.1 | ||
| PFR* (EDV/s) | 2.81 ± 0.49 | 2.58 ± 0.45 | 2.37 ± 0.29 | ||
| TTPF (ms) | 163.1 ± 17.1 | 161.6 ± 15.8 | 170.2 ± 31.4 | ||
↵* P < 0.005; across 3 groups and age group <50 y vs. ≥60 y.
HR = HR during poststress gated MPS acquisition.