Research Article
Time-Dependent Regional Myocardial Strains in Patients with Heart Failure with a Preserved Ejection Fraction
Table 5
Time to reach peak systole (entire cardiac cycle length 1.0 as in Figure
6, e.g.). At each location, the normalized control was compared with HFpEF.
| | Base | Mid | Apex | | % cardiac cycle ± std. dev. | value | % cardiac cycle ± std. dev. | value | % cardiac cycle ± std. dev. | value |
| Longitud. strain | Endo | | | | | | | Normalized control | 0.450 ± 0.014 | <0.001 | 0.404 ± 0.013 | <0.001 | 0.404 ± 0.013 | <0.001 | HFpEF | 0.525 ± 0.012 | | 0.442 ± 0.013 | | 0.442 ± 0.013 | | Epi | | | | | | | Normalized control | 0.451 ± 0.014 | <0.001 | 0.403 ± 0.013 | <0.001 | 0.403 ± 0.013 | <0.001 | HFpEF | 0.485 ± 0.012 | | 0.485 ± 0.012 | | 0.495 ± 0.012 | |
| Circumfer. strain | Endo | | | | | | | Normalized control | 0.404 ± 0.013 | 0.604 | 0.403 ± 0.014 | 0.739 | 0.404 ± 0.014 | 0.507 | HFpEF | 0.401 ± 0.013 | | 0.401 ± 0.013 | | 0.400 ± 0.013 | | Epi | | | | | | | Normalized control | 0.404 ± 0.013 | 0.604 | 0.350 ± 0.010 | <0.001 | 0.404 ± 0.014 | 0.507 | HFpEF | 0.401 ± 0.013 | | 0.401 ± 0.013 | | 0.400 ± 0.013 | |
| Rotation | Endo | | | | | | | Normalized control | 0.399 ± 0.107 | 0.001 | 0.439 ± 0.097 | 0.260 | 0.390 ± 0.084 | 0.007 | HFpEF | 0.591 ± 0.125 | | 0.493 ± 0.116 | | 0.565 ± 0.171 | | Epi | | | | | | | Normalized control | 0.436 ± 0.079 | 0.014 | 0.443 ± 0.101 | 0.483 | 0.408 ± 0.096 | 0.017 | HFpEF | 0.556 ± 0.122 | | 0.473 ± 0.090 | | 0.564 ± 0.171 | |
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