Table 3.
Cardiac Magnetic Resonance Imaging Parameters
| Variables | Entire Cohort N = 27 |
Peak O2 Pulse < 85% n = 12 |
Peak O2 Pulse ≥85% n = 15 |
P-Value |
|---|---|---|---|---|
| LVEF, % | 64 [53–74] | 59 [50–65] | 67 [62–75] | 0.046 |
| LVEDV Index, mL/m2 | 62 [55–71] | 61 [49–71] | 62 [56–74] | 0.651 |
| LVESV Index, mL/m2 | 25 [18–32] | 24 [18–38] | 25 [15–32] | 0.695 |
| LV SV Index, mL/m2 | 38 [31–44] | 32 [27–42] | 39 [34–45] | 0.044 |
| LV Cardiac Index, L·min−1/m2 | 2.7 [2.2–3.0] | 2.3 [1.8–3.0] | 2.7 [2.6–2.9] | 0.190 |
| Presence of LGE | 12 (44%) | 5 (42%) | 7 (47%) | 0.274 |
| LGE, % | 0 [0–3] | 0 [0–2] | 2 [0–4] | 0.427 |
| Native T1-Global, ms | 1042 [1013–1063] | 1044 [1019–1070] | 1039 [1009–1047] | 0.631 |
| Post-contrast T1-Global, ms | 434 [410–463] | 425 [386–473] | 436 [416–454] | 0.781 |
| LV ECVF-Global, % | 28 [26–31] | 29 [28–32] | 27 [25–29] | 0.036 |
Data are listed as median and [interquartile range] or n (%). P-values are differences between groups (< 85% and ≥ 85% predicted peak exercise O2 Pulse)
Abbreviations: LVEF left-ventricular ejection fraction, LVEDV left-ventricular end-diastolic volume, LVESV left-ventricular end-systolic volume, SV stroke volume, LGE late-gadolinium enhancement, T1 myocardial T1, LV ECVF left-ventricular extracellular volume fraction